Competitive Mechatronics MCQs – Analog Signal Conditioning ( Mechatronics ) MCQs
Latest Mechatronics MCQs
By practicing these MCQs of Analog Signal Conditioning ( Mechatronics ) MCQs – Latest Competitive MCQs , an individual for exams performs better than before. This post comprising of objective questions and answers related to “ Analog Signal Conditioning ( Mechatronics ) Mcqs “. As wise people believe “Perfect Practice make a Man Perfect”. It is therefore practice these mcqs of Mechatronics to approach the success. Tab this page to check ” Analog Signal Conditioning ( Mechatronics )” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others.
Mechatronics MCQs – Analog Signal Conditioning ( Mechatronics ) MCQs
The most occurred mcqs of Analog Signal Conditioning ( ) in past papers. Past papers of Analog Signal Conditioning ( Mechatronics ) Mcqs. Past papers of Analog Signal Conditioning ( Mechatronics ) Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Analog Signal Conditioning ( Mechatronics ) Mcqs. The Important series of Analog Signal Conditioning ( Mechatronics ) Mcqs are given below:
Current to Voltage Converters
1. Which law or equation gives a relationship between voltage and current?
a) Maxwell’s second equation
b) Maxwell’s first equation
c) Lenz Law
d) Ohm’s law
Answer: d
Explanation: Ohm’s law gives a relationship between voltage and current. It states that, at a constant temperature the voltage across a conductor is directly proportional to the current flowing through it. The proportionality constant is termed as resistance.
2. What is the voltage drop across a resistor of 12 ohm if the current flowing through it is 1A?
a) 10V
b) 12V
c) 11V
d) 6V
Answer: b
Explanation: 12V is the voltage drop across a resistor of 12 ohm if the current flowing through it is 1A. From the ohm’s law we know that V=I*R, where V is the voltage in volts, I is the current in ampere and R is the resistance in ohm’s. Therefore, the voltage drop will be=>12*1 = 12 volts.
3. Op-Amp in the form of trans-impedance amplifier can be used as current to voltage converter.
a) True
b) False
Answer: a
Explanation: Op-Amp in the form of trans-impedance amplifier can be used as current to voltage converter. In this negative feedback is used, because without any feedback the Op-Amp will not work. The input is provided at the inverting terminal and the non inverting terminal is set to ground. The voltage output is taken from the output terminal.
4. What should be the resistance placed across a voltage source in order to generate a current of 6 ampere from a voltage source of 12 volts?
a) 2 ohms
b) 72 ohms
c) 4 ohms
d) 1 ohm
Answer: a
Explanation: A resistance of 2 ohm should be placed across a voltage source in order to generate a current of 6 ampere from a voltage source of 12 volts. From the ohm’s law we know that V=IR, therefore resistance = V/I => 12/6 = 2 ohms.
5. Which integrated circuit can be used as a current to voltage converter?
a) BC541
b) LM741
c) TIP122
d) TIP135
Answer: b
Explanation: LM741 Op-Amp integrated circuit can be used as a current to voltage converter. It is an operational amplifier integrated circuit, and its non-inverting configuration can be used for the conversion of current to voltage.
6. Trans-impedance amplifier is more efficient than a resistance in terms of current to voltage conversion?
a) True
b) False
Answer: a
Explanation: Trans-impedance amplifier is more efficient than a resistance in terms of current to voltage conversion. The output impedance is expected to be low, for driving any device. Op-Amp has very less output impedance which makes it better for current to voltage conversion. Also it has very high input impedance which consumes very less current in the input.
7. What does DAQ stand for?
a) Data Acquisition
b) Data Acquisition quantity
c) Data Acquisition quality
d) Digital Acquisition
Answer: a
Explanation: DAQ stands for Data Acquisition. It is a process by which physical quantities are measured. Physical quantities such as current, voltage etc. can be measured with the help of DAQ (Data Acquisition) systems.
8. What is the magnitude of gain of an Op-Amp if it’s negative feedback resistance is 20 ohm and its input resistance is 10 ohm (consider the input is in inverting terminal)?
a) 2
b) 3
c) 4
d) 1/2
Answer: a
Explanation: The gain of an Op-Amp is 2 if its negative feedback resistance is 20 ohm and its input resistance is 10 ohm. Since we know that the magnitude of gain, when the input is given at the inverting terminal is given by RF/RI, where RF is feedback resistance and RI is input resistance. This gives out, gain= 20/10 => 2.
9. What should be the resistance placed across a voltage source in order to generate a current of 6 ampere from a voltage source of 24 volts?
a) 2 ohms
b) 72 ohms
c) 4 ohms
d) 1 ohm
Answer: c
Explanation: A resistance of 4 ohm should be placed across a voltage source in order to generate a current of 6 ampere from a voltage source of 12 volts. From the ohm’s law we know that V=IR, therefore resistance = V/I => 24/6 = 4 ohms.
10. What is the voltage drop across a resistor of 12 ohm if the current flowing through it is 2A?
a) 10V
b) 22V
c) 11V
d) 24V
Answer: d
Explanation: 24V is the voltage drop across a resistor of 12 ohm if the current flowing through it is 2A. From the ohm’s law we know that V=I*R, where V is the voltage in volts, I is the current in ampere and R is the resistance in ohm’s. Therefore the voltage drop will be =>12*2 = 24 volts.
11. What is the magnitude of gain of an Op-Amp if it’s negative feedback resistance is 30 ohm and its input resistance is 10 ohm (consider the input is in inverting terminal)?
a) 2
b) 3
c) 4
d) 1/2
Answer: b
Explanation: The gain of an Op-Amp is 3 if its negative feedback resistance is 30 ohm and its input resistance is 10 ohm. Since we know that the magnitude of gain, when the input is given at the inverting terminal is given by RF/RI, where RF is feedback resistance and RI is input resistance. This gives out, gain = 30/10 => 3.
12. What is the magnitude of gain of an Op-Amp if it’s feedback resistance is 30 ohm and its input resistance is 10 ohm (consider the input is in non-inverting terminal)?
a) 2
b) 3
c) 4
d) 1/2
Answer: c
Explanation: The gain of an Op-Amp is 4 if its feedback resistance is 30 ohm and its input resistance is 10 ohm. Since we know that the magnitude of gain, when the input is given at the non-inverting terminal is given by 1+(RF/RI), where RF is feedback resistance and RI is input resistance. This gives out, gain=1+(30/10) => 4.
13. What is the magnitude of gain of an Op-Amp if it’s feedback resistance is 20 ohm and its input resistance is 10 ohm (consider the input is in non-inverting terminal)?
a) 2
b) 3
c) 4
d) 1/2
Answer: b
Explanation: The gain of an Op-Amp is 3 if its feedback resistance is 20 ohm and its input resistance is 10 ohm. Since we know that the magnitude of gain, when the input is given at the non-inverting terminal is given by 1+(RF/RI), where RF is feedback resistance and RI is input resistance. This gives out, gain=1+(20/10) => 3.
14. What should be the resistance placed across a voltage source in order to generate a current of 3 ampere from a voltage source of 12 volts?
a) 2 ohms
b) 72 ohms
c) 4 ohms
d) 1 ohm
Answer: c
Explanation: A resistance of 4 ohm should be placed across a voltage source in order to generate a current of 3 ampere from a voltage source of 12 volts. From the ohm’s law we know that V=IR, therefore resistance=V/I => 12/3 = 4 ohms.
15. Who invented direct current?
a) Nicola Tesla
b) Thomas Edison
c) Albert Einstein
d) Stephen Hawking
Answer: b
Explanation: Thomas Edison invented direct current. Direct current is a unidirectional current. It flows when electrons move constantly in a particular direction. By convention the direction of current is taken opposite to the direction of electron flow.
Voltage to Current Converters
1. Ohm’s law gives a relation between voltage and resistance.
a) True
b) False
Answer: b
Explanation: Ohm’s law does not give relation between voltage and resistance. The ohms law establishes a relationship between voltage and current. Resistance is the proportionality constant. In equation form, ohms law can be expressed as V=I*R, where all variables have their usual meaning.
2. What is the current flowing through a resistor of 12ohm if the voltage drop across a resistor is 4 volts?
a) 4Ampere
b) 3Ampere
c) 2Ampere
d) 6Ampere
Answer: b
Explanation: 3Ampere current flowing through a resistor of 12ohm if the voltage drop across a resistor is 4 volts. Since we know from the ohm’s law we know that V=IR where V is the voltage drop across the resistor, I is the current flowing through it and R is the resistance value of it, therefore I=V/R, which gives I=>12/4=3ampere.
3. Resistance of a substance does not change if we alter its shape or length.
a) True
b) False
Answer: b
Explanation: Resistance of a substance changes, if we alter its shape or length. Resistance is directly proportional to the length of the substance and inversely proportional to its area. Resistivity of a material remains constant.
4. What should be the resistance placed across a voltage source in order to generate a current of 6ampere from a voltage source of 12volts?
a) 2ohms
b) 72 ohms
c) 4 ohms
d) 1 ohm
Answer: a
Explanation: A resistance of 2 ohm should be placed across a voltage source in order to generate a current of 6 ampere from a voltage source of 12volts. From the ohm’s law we know that V=IR, therefore resistance=V/I=>12/6=2ohms.
5. Which is a voltage to current converter?
a) BC541
b) XTR111
c) TIP122
d) TIP135
Answer: b
Explanation: XTR111 is a voltage to current converter. It is a very precise voltage to current converter designed by the Texas Instruments. It has an adjustable voltage regulator with a wide output supply range.
6. Trans-impedance amplifier is more efficient than a resistance in terms of current to voltage conversion?
a) True
b) False
Answer: a
Explanation: Trans-impedance amplifier is more efficient than a resistance in terms of current to voltage conversion. The output impedance is expected to be low, for driving any device. Op-Amp has very less output impedance which makes it better for current to voltage conversion. Also, it has very high input impedance which consumes very less current in the input.
7. What is the ratio of current to the voltage called?
a) Resistivity
b) Resistance
c) Conductance
d) Impedance
Answer: c
Explanation: The ratio of current to the voltage is called as conductance. It is the reciprocal of resistance. It is the degree or the measure of how easily the electric current can flow through a substance. Its unit is mho also called as ohm inverse.
8. What is the ratio of voltage to current called?
a) Resistivity
b) Resistance
c) Conductance
d) Impedance
Answer: b
Explanation: The ratio of current to the voltage is called as resistance. It is the degree or the measure of opposition of flow of electric current through a substance. Its unit is ohm. It is generally denoted by “R”.
9. What should be the resistance placed across a voltage source in order to generate a current of 6ampere from a voltage source of 24volts?
a) 2ohms
b) 72 ohms
c) 4 ohms
d) 1 ohm
Answer: c
Explanation: A resistance of 4 ohm should be placed across a voltage source in order to generate a current of 6 ampere from a voltage source of 12volts. From the ohm’s law we know that V=IR, therefore resistance=V/I=>24/6 = 4ohms.
10. What is the current flowing through a resistor of 24ohm if the voltage drop across a resistor is 4 volts?
a) 4Ampere
b) 3Ampere
c) 2Ampere
d) 6Ampere
Answer: d
Explanation: 6Ampere current flowing through a resistor of 24ohm if the voltage drop across a resistor is 4 volts. Since we know from the ohm’s law we know that V=IR where V is the voltage drop across the resistor, I is the current flowing through it and R is the resistance value of it, therefore I=V/R, which gives I=>24/4=6ampere.
11. Resistivity of a substance does not change if we alter its shape or length.
a) True
b) False
Answer: a
Explanation: Resistivity of a substance does not change if we alter its shape or length. Resistivity is the property of a material, which does not vary with length and size. Resistance of a substance changes, if we alter its shape or length.
Analog Signal Conditioning MCQs
12. Which among the following can be termed as voltage to current converter?
a) Current controlled current source
b) Current controlled voltage source
c) Voltage controlled current source
d) Voltage controlled voltage source
Answer: c
Explanation: Voltage controlled current source can be termed as voltage to current converter. In this type of sources, the output current depends on some external voltage drop or voltage source, which is why they are named so.
13. What is the current flowing through a resistor of 24 ohms if a capacitor of 10 microfarads is placed in series to a resistor along with 10V DC voltage supply?
a) 4Ampere
b) 3Ampere
c) 2Ampere
d) 0Ampere
Answer: d
Explanation: No current or 0 current flows through a resistor of 24 ohms if a capacitor of 10 microfarads is placed in series to a resistor along with 10V DC voltage supply. Since capacitor does not allow any DC current to pass through it so the current flowing across the resistor is 0.
14. What is the current flowing through a resistor of 24 ohms if a capacitor of 10 microfarads is placed in parallel to the resistor and 4V DC voltage supply is placed in series with the resistor?
a) 4Ampere
b) 3Ampere
c) 6Ampere
d) 0Ampere
Answer: c
Explanation: 6ampere current flowing through a resistor of 24ohm if the voltage drop across a resistor is 4 volts. The capacitor will act as open circuit and no current will pass through it as DC voltage is applied. And since we know from the ohm’s law we know that V=IR where V is the voltage drop across the resistor, I is the current flowing through it and R is the resistance value of it, therefore I=V/R, which gives I=>24/4=6ampere.
15. What is the current flowing through a resistor of 4 ohms if a capacitor of 10 microfarads is placed in series to a resistor along with 5V DC voltage supply?
a) 4Ampere
b) 3Ampere
c) 2Ampere
d) 0Ampere
Answer: d
Explanation: No current or 0 current flows through a resistor of 4 ohms if a capacitor of 10 microfarads is placed in series to a resistor along with 5V DC voltage supply. Since capacitor does not allow any DC current to pass through it so the current flowing across the resistor is 0.
Voltage to Frequency Conversion
1. What is the frequency of the supplied alternating current in India?
a) 50 KHz
b) 30 Hz
c) 50 Hz
d) 60 Hz
Answer: c
Explanation: 50 Hz is the frequency of the supplied alternating current in India. The frequency of supplied current, vary from country to country. In USA the frequency of the supplied alternating current is 60 Hz.
2. Which type of waveform can be produced by linear oscillators?
a) Saw tooth
b) Sinusoidal
c) Square
d) Parabolic
Answer: b
Explanation: Sinusoidal waveform can be produced by linear oscillators. There are two types of oscillator, namely linear oscillator and non-linear oscillator. Linear oscillator can only produce sinusoidal waveform.
3. NE555 Integrated circuit can create alternating signals.
a) True
b) False
Answer: a
Explanation: NE555 Integrated circuit can create alternating signals. It can create square signals. It has three modes of configuration (mono-stable, bi-stable, A-stable) through which we can control the duty cycle and the type of signal we want.
4. How many modes are present in NE555 Integrated circuit?
a) 2
b) 3
c) 4
d) 1
Answer: b
Explanation: NE555 integrated circuit has three operating modes. These modes are namely Astable mode, monostable mode and bistable mode. Monostable mode has only one stable state, bistable mode has two stable states whereas Astable mode has no stable state.
5. Which is a voltage to frequency converter?
a) BC541
b) TIP122
c) LM566
d) TIP135
Answer: c
Explanation: LM566 is a voltage to frequency converter. It is a voltage controlled oscillator designed by the National Instruments. The frequency of the output can be altered by varying the voltage at the input side.
6. How many stable states does Astable mode of NE555 has?
a) 2
b) 3
c) 0
d) 1
Answer: c
Explanation: Astable mode of NE555 has no stable state. It produces continuous alternating signal whose duty cycle can be controlled by choosing different values of resistance used in this configuration, or just changing the resistance value using potentiometer.
7. Which type of wave can be generated by LM566?
a) Aperiodic
b) Sine
c) Square
d) Parabolic
Answer: c
Explanation: LM566 can generate square waveform. It a voltage controlled oscillator. It can generate time varying alternating square or triangular waveforms from constant DC voltage. Its frequency is linear function to the applied input voltage.
8. What is the full form of LFO in context to signal generations?
a) Least frequency oscillator
b) Low frequency oscillator
c) Low frequency oscillations
d) Least frequency oscillations
Answer: b
Explanation: LFO in context to signal generations stands for Low frequency oscillator. It is used to generate time varying signals whose frequency is very low. Its output frequency is less than 20 Hz.
9. What is the frequency range of radio frequency(RF)?
a) 20 KHz to 300 GHz
b) 2 KHz to 30 GHz
c) 200 KHz to 3000 GHz
d) 10 KHz to 10 GHz
Answer: a
Explanation: The range of radio frequency(RF) is 20 KHz to 300 GHz. Radio frequency(RF) is generally used in telephonic communications. These High frequency valued signal can encapsulate large number of information within them.
10. Which type of waveform cannot be produced by non-linear oscillators?
a) Saw-tooth
b) Sinusoidal
c) Square
d) Triangular
Answer: b
Explanation: Sinusoidal waveform cannot be produced by non-linear oscillators. There are two types of oscillator, namely linear oscillator and non-linear oscillator. Linear oscillator can only produce sinusoidal signals. Non-linear oscillator can only produce non-sinusoidal waveforms such as Saw tooth, Square, Triangular etc.
11. Which type conversion can be done using LM2575WU?
a) DC-DC conversion
b) AC-DC conversion
c) DC-AC conversion
d) AC-AC conversion
Answer: a
Explanation: DC-DC conversion can be done using LM2575WU. It is a step down DC (Direct current) to DC (Direct current) converter Integrated circuit. It is manufactured by microchip technology. It has total 6 pins.
12. Who invented alternating current?
a) Nicola Tesla
b) Thomas Edison
c) Albert Einstein
d) Stephen Hawking
Answer: a
Explanation: Nicola Tesla invented alternating current. Alternating current is a bidirectional current. The direction of current is not fixed; it changes in every fraction of a second. This is the current which comes in our home through electric poles and we use it for fulfilling up our daily needs such as lighting up bulbs and tubelights.
13. What is the frequency of the supplied alternating current in United States?
a) 50 KHz
b) 30 Hz
c) 50 Hz
d) 60 Hz
Answer: d
Explanation: 60 Hz is the frequency of the supplied alternating current in United States. The frequency of supplied current, vary from country to country. In India the frequency of the supplied alternating current is 50 Hz.
14. What is the time taken by a sinusoidal signal of frequency 0.5 Hz to complete one fundamental cycle?
a) 5 seconds
b) 3 seconds
c) 2 seconds
d) 4 seconds
Answer: c
Explanation:
Given: Frequency(F) = 0.5 Hz
Frequency(F)=1/T
Time Period(T) = 1/F
Therefore, Time Period(T)=1/0.5 => 2 seconds.
15. What is the frequency of a sinusoidal signal if the time taken to complete one fundamental cycle is 0.1 seconds?
a) 5 Hz
b) 10 Hz
c) 0.5 Hz
d) 4 Hz
Answer: b
Explanation:
Given: Time Period(T)=0.1 second
Frequency(F)=1/T
Therefore, Frequency(F)=1/0.1=>10 s-1
Or Frequency(F)=10 Hz.
Frequency to Voltage Conversion
1. We can control the High and Low states of 555 timer IC (Integrated Circuit) in monostable mode.
a) True
b) False
Answer: b
Explanation: We cannot control the High and Low states of 555 timer IC (Integrated Circuit) in monostable mode. In monostable mode we have only stable state which can be either high or low. But in bistable mode we can control the High and Low states of 555 timer IC (Integrated Circuit) because we have two stable states.
2. Capacitors do not allow AC (Alternating current) to pass through it?
a) True
b) False
Answer: b
Explanation: Capacitors allows only AC (Alternating current) to pass through it. It blocks DC (Direct current) to pass through it. Capacitors are used as a filter to separate DC (Direct current) and AC (Alternating current). It acts as open circuit when DC (direct current) is applied.
3. Capacitors do not allow DC (Direct current) to pass through it?
a) True
b) False
Answer: a
Explanation: Capacitors does not allow DC (Direct current) to pass through it. Capacitors only allow alternating type of signal to pass through it. When DC voltage is applied across the terminals of the capacitor then, the capacitor gets charged up and acts as an open circuit path.
4. How many pins do LM331 IC (Integrated circuit) has?
a) 16
b) 4
c) 8
d) 10
Answer: c
Explanation: LM331 IC (Integrated circuit) has 8 pins. It comes in a 8 pin DIP package. It has excellent linearity property which can be used for voltage to frequency conversion and vice versa. It is manufactured by National Semiconductors.
5. Which is a frequency to voltage converter?
a) BC541
b) TIP122
c) LM555
d) TIP135
Answer: c
Explanation: LM555 is a frequency to voltage converter. It can produce accurate and precise oscillations. It can also be used to generate precise time delays. For generating time delays, an external resistor or capacitor is used.
6. How many pins does LM555 IC (Integrated circuit) has?
a) 16
b) 4
c) 8
d) 10
Answer: c
Explanation: LM555 IC (Integrated circuit) has 8 pins. It is a timer IC (Integrated circuit) that comes in a 8 pin DIP package. The IC (Integrated circuit) can be used in three modes that are monostable, astable and bistable.
7. Which is not a voltage to frequency converter?
a) BC541
b) LM2917
c) LM555
d) KA331
Answer: a
Explanation: BC541 is not a voltage to frequency converter. It is a bipolar junction transistor. LM2917 is a voltage to frequency converter designed by the Texas instrument. LM555 is a timer Integrated circuit which can be used for voltage to frequency. KA331 is developed by ON Semiconductor which can be used voltage to frequency conversion and vice versa.
8. Which is a frequency to voltage converter?
a) BC541
b) LM741H
c) LM2917
d) TIP135
Answer: c
Explanation: LM2917 is a frequency to voltage converter. It is manufactured by the Texas Instruments. LM741H is most commonly used operational amplifier. BC541 is a bipolar junction transistor. TIP135 is a Darlington transistor.
9. What is the bandwidth range of KA331 IC?
a) 1 Hz to 100 KHz
b) 1 Hz to 100 GHz
c) 2 KHz to 30 GHz
d) 10 KHz to 10 GHz
Answer: a
Explanation: The bandwidth range of KA331 IC is 1Hz to 100 KHz. It is a voltage to frequency converter which is used in making analog to digital converter. This IC (Integrated circuit) comes in a 8 in DIP package. It can also be used to make frequency to voltage converter.
10. LM331 cannot be used for frequency to voltage conversion?
a) True
b) False
Answer: b
Explanation: LM331 can be used for frequency to voltage conversion. It is designed for precise frequency to voltage conversion by the National Semiconductors. It can also be used for voltage to frequency conversion.
11. What is the frequency of a signal if the time taken to complete one cycle is 0.2 seconds?
a) 5 Hz
b) 2 Hz
c) 0.5 Hz
d) 4 Hz
Answer: a
Explanation:
Given: Time Period (T) = 0.2 second
Frequency (F) = 1/T
Therefore, Frequency (F)=1/0.2=>5-1
Or Frequency (F)=5 Hz
12. What is the time period of a signal if the time taken to complete one cycle is 10 hertz?
a) 5 second
b) 0.1 second
c) 0.5 second
d) 4 second
Answer: a
Explanation:
Given: Frequency (F) = 10 hertz
Time Period (T) = 1/F
Therefore, Time Period (T) = 1/10 => 0.1 s
13. What is the type of signal called when its frequency is zero?
a) Sine Signal
b) Square wave
c) DC (Direct current) Signal
d) Rectilinear signal
Answer: c
Explanation: DC (Direct current) Signal has frequency zero. These types of signal does not contain any crests and troughs, the signal is represented by straight line parallel to any axis. The straight line represents that the signal does not changes its polarity with time.
14. Inductors do not allow DC (Direct current) to pass through it?
a) True
b) False
Answer: b
Explanation: Inductors allows DC (Direct current) to pass through it. Inductors show their characteristic properties with alternating current (or signals). When DC current is applied to it, it acts as a normal conductor with zero resistance.
15. Inductors do not allow AC (Alternating current) to pass through it?
a) True
b) False
Answer: b
Explanation: Inductors allows AC (Alternating current) to pass through it. Inductors show their characteristic properties with alternating current (or signals). When AC (Alternating current) is applied across it, it resists the change in current flowing through it and therefore the current lags the voltage by 90 degree.