Radio Receivers - Part 1 Online Exam Quiz
Radio Receivers - Part 1 GK Quiz. Question and Answers related to Radio Receivers - Part 1. MCQ (Multiple Choice Questions with answers about Radio Receivers - Part 1
The noise generated by a resistor depends upon
Options
A : its resistance value
B : its operating temperature
C : both its resistance value and operating temperature
D : none of the above
In a superheterodyne receiver
Options
A : the IF stage has better selectivity than RF stage
B : the RF stage has better selectivity than IF stage
C : the RF stage has same selectivity than IF stage
D : none of the above
The function of an AM detector circuit is to
Options
A : rectify the input signal
B : discard the carrier
C : provide audio signal
D : all of the above
Which of the following should be used in order to prevent overloading or the last IF amplifier in a receiver?
Options
A : Variable selectivity
B : Variable sensitivity
C : Double conversion
D : Squelch
Most popular IF for receivers tuning to 540 to 1650 kHz is
Options
A : 433 kHz
B : 455 kHz
C : 545 kHz
D : 555 kHz
In a broadcast superheterodyne receiver
Options
A : the local oscillator operates below the signal frequency
B : local oscillator frequency is normally double the IF
C : RF amplifier normally works at kHz above the carrier frequency
D : mixer input must be tuned to the signal frequency
A duplexer is a device used to
Options
A : feed more than one receiver from a single antenna
B : connect two transmitters to the same antenna
C : connect a receiver and a transmitter to the same antenna
D : none of these
A heterodyne frequency changer is called a
Options
A : Modulator
B : Mixer
C : Demodulator
D : Frequency translator
RF amplifiers are used in radio receivers for
Options
A : improved image frequency rejection
B : improved rejection of adjacent unwanted signals
C : prevention of re-radiation of the local oscillator through the antenna of the receiver
D : all of the above
The sensitivity curve of a standard receiver is represented by
Options
A : curve A
B : curve B
C : curve C
D : curve D
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