BPSC AE EE Quiz 6

In a superheterodyne receiver, arrange the following components sequentially from input to the output

1. Antenna

2. Mixer

3. IF amplifier

4. Audio amplifier

Options:

Statement I : In parallel clipper, when diode is connected in downward direction in the parallel path, it becomes positive peak clipper.

Statement II : In series clipper, when diode is connected in forward path, it becomes positive peak clipper.

Why BJT amplifiers have high gain than FET amplifiers ?

the antenna current of AM transmitter is 4A before modulation and 4.2 A after modulation. Determine modulation index.

What is the value of I(mA) (Diode is ideal)

Which of the following is correct? (diodes and op-amp are ideal).

A  carrier is frequency modulated by a sinusoidal signal of, the maximum frequency deviation being. The bandwidth required, as per Carson’s rule is?

A carrier is amplitude modulated by the speech band of. The range of upper sides will be

A carrier is frequency modulated by a sinusoidal signal, and the frequency deviation is 100 kHz. Determine modulation index and bandwidth if the message signal frequency is 1000 kHz.