Modulation And Demodulation Mcqs – (Electrical Engineering) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

Modulation And Demodulation Mcqs – (Electrical Engineering) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

Modulation And Demodulation Mcqs - (Electrical Engineering) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
Modulation And Demodulation Mcqs

Modulation And Demodulation Mcqs“. Tab this page to check “Latest Modulation And Demodulation Mcqs 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. The most occurred mcqs of Modulation And Demodulation in past papers. Past papers of Modulation And Demodulation Mcqs. Past papers of Modulation And Demodulation Mcqs. Mcqs are the necessary part of any competitive / job related exams. The Modulation And Demodulation Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Modulation And Demodulation Mcqs. The Important series of Modulation And Demodulation Mcqs are given below:

In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because _________________?

A. Only the difference frequency can be modulated
B. Lower frequencies are easier to amplify
C. The difference frequency is closer to oscillator frequency
D. None of the above

In a TRF radio receiver, the RF and detection stages are tuned to______________?

A. Radio frequency
B. Audio frequency
C. IF
D. None of the above

In the above question, what is the power in sidebands?

A. 6 kW
B. 8 kW
C. 06 kW
D. 9 kW

In TV transmission, sound signal is ______________modulated?

A. Phase
B. Frequency
C. Amplitude
D. None of the above

The diode detector in an AM radio receiver is usually found _____________?

A. After the first RF stage
B. Before the first RF stage
C. After several stages of amplification
D. None of the above

In the above question, what is the power in sidebands ?

A. 6 kW
B. 8 kW
C. 06 kW
D. 9 kW

Modulation refers to a low-frequency signal controlling the ________________?

A. Frequency of the carrier
B. Amplitude of the carrier
C. Phase of the carrier
D. May be any of the above

The major advantage of FM over AM is__________________?

A. Reception is less noisy
B. Smaller bandwidth
C. Higher carrier frequency
D. Small frequency deviation

Superhertodyne principle refers to_________________?

A. Using a push-pull circuit
B. Using a large number of amplifier stages
C. Obtaining lower fixed intermediate frequency
D. None of the above

The superhetrodyne principle provides selectivity at ______________stage?

A. audio
B. IF
C. RF
D. Before RF

Most of the amplification in a superhetrodyne receiver occurs at ______________stage?

A. IF
B. Audio amplifier
C. RF amplifier
D. Detector

If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ________________?

A. Selectivity
B. Sensitivity
C. Distortion
D. Fidelity

The letters AVC stand for ________________?

A. Abrupt voltage control
B. Audio voltage control
C. Automatic volume control
D. Automatic voltage control

In superhetrodyne receiver, the input at mixer stage is________________?

A. RF and AF
B. IF and RF
C. IF and AF
D. RF and local oscillator signal

When the modulating signal controls the frequency of the carrier, we get______________?

A. Amplitude modulation
B. Phase modulation
C. Frequency modulation
D. May be any one of the above

The IF is 455 kHz. If the radio receiver is tuned to 855 kHz, the local oscillator frequency is _______________?

A. 1500 kHz
B. 1310 kHz
C. 455 kHz
D. 1520 kHz

The function of ferrite antenna is to_________________?

A. Stabilise d.c. bias
B. Reduce stray capacitance
C. Increase the Q of tuned circuit
D. Reduce noise

A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor ?

A. 5
B. 6
C. 3
D. None of the above

If Amin = 40 and Amax = 60, what is the percentage of modulation?

A. 20 %
B. 50 %
C. 40 %
D. 10 %

In a radio receiver, we generally use ………….. oscillator as a local oscillator

A. Wien-bridge
B. Crystal
C. Phase-shift
D. Hartley

A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation ?

A. 50 kW
B. 8 kW
C. 5 kW
D. 25 kW

As the modulation level is increased, the carrier power__________________?

A. Is decreased
B. Remains the same
C. Is increased
D. None of the above

A high Q tuned circuit will permit an amplifier to have high __________________?

A. Frequency range
B. Fidelity
C. Sensitivity
D. Selectivity

Man made noise are______________ variations?

A. Amplitude
B. Phase
C. Frequency
D. Both phase and frequency

If level of modulation is increased ______________ power is increased?

A. Carrier as well as sideband
B. Sideband
C. Carrier
D. None of the above

Demodulation is done in ________________?

A. Transmitter
B. Receiving antenna
C. Radio receiver
D. Transmitting antenna

In radio transmission, the medium of transmission is ________________?

A. Space
B. Cable
C. An antenna
D. None of the above

In TV transmission, picture signal is ______________ modulated?

A. Phase
B. Frequency
C. Amplitude
D. None of the above

In a radio receiver, noise is generally developed at _______________?

A. Receiving antenna
B. IF stage
C. Audio stage
D. RF stage

The signal voltage induced in the aerial of a radio receiver is of the order of ________________?

A. V
B. µV
C. mV
D. None of the above

In a transmitter ____________oscillator is used?

A. RC phase-shift
B. Hartley
C. Wien-bridge
D. Crystal

In an AM wave useful power is carrier by ______________?

A. Both sidebands and carrier
B. Sidebands
C. Carrier
D. None of the above

In an AM wave, the majority of the power is in _____________?

A. Upper sideband
B. Lower sideband
C. Carrier
D. None of the above

If modulation is 100% then signal amplitude is ____________arrier amplitude?

A. Equal to
B. Less than
C. Greater than
D. None of the above

In amplitude modulation, the _____________of carrier is varied according to the strength of the signal?

A. Amplitude
B. Phase
C. Frequency
D. None of the above

In pakistan, ______________ modulation is used for radio transmission?

A. Phase
B. Amplitude
C. Frequency
D. None of the above

Modulation is done in____________________

A. Transmitter
B. Between transmitter and radio receiver
C. Radio receiver
D. None of the above

In amplitude modulation, bandwidth is ____________ the audio signal frequency?

A. Four times
B. Thrice
C. Twice
D. None of the above

At 100% modulation, the power in each sideband is _____________ of that of carrier?

A. 40%
B. 50%
C. 60%
D. 25%

Overmodulation (amplitude) occurs when signal amplitude is _____________ carrier amplitude?

A. Less than
B. Greater than
C. Equal to
D. None of the above

Over modulation results in ______________?

A. Excessive carrier power
B. Weakening of the signal
C. Distortion
D. None of the above

Modulation And Demodulation Mcqs – (Electrical Engineering) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests

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