Emitter modulator amplifier for Amplitude Modulation
A. Operates in class A mode
B. Has a low efficiency
C. Output power is small
D. All of the above
A. Change in amplitude of the carrier according to modulating signal
B. Change in frequency of the carrier according to modulating signal
C. Change in amplitude of the modulating signal according to carrier signal
D. Change in amplitude of the carrier according to modulating signal frequency
A. Sensitivity
B. Selectivity
C. Stability
D. None of the above
A. Have better sensitivity
B. Have high selectivity
C. Need extra circuitry for frequency conversion
D. All of the above
A. Carrier frequency
B. Upper side band frequency
C. Lower side band frequency
D. All of the above
Standard intermediate frequency used for AM receiver is
A. 455 MHz
B. 455 KHz
C. 455 Hz
D. None of the above