Electronic Devices - Test 1 - Electronics and Telecommunication Engineering

Solve these MCQs carefully and Click the "Check Out" button at the end of the question paper. It would let you know your marks with correct answer key and solutions. Best of Luck!

Questions

1. A full wave peak rectifier (using capacitor input filter) has a percentage ripple of 2 and load resistance of 10 k-ohm. Minimum filter capacitance, in (Mu)F, required is

A.
B.
C.
D.

2. A zener regulator has an input voltage from 16 to 20 V and a load current from 25 to 100 ma. Voltage constant under all conditions, the value of series limiting resistor should be

A.
B.
C.
D.

3. An amplifier is used to amplify a 30Pi Hz square wave with a sag not exceeding 1%. maximum permissible lower 3 dB frequency of the amplifier in Hz is

A.
B.
C.
D.

4. If 8 identical RC sections are used in the feedback path of a phase-shift oscillator (with non-inverting amplifier) it will oscillate at the frequency at which each section shifts phase by

A.
B.
C.
D.

5. The ideal characteristic of a stabilizer is

A.
B.
C.
D.

6. As compared to a full-wave rectifier using two diodes, the four diode bridge rectifier has the dominant advantage of

A.
B.
C.
D.

7. The bandwidth of an RF tuned amplifier is dependent on

A.
B.
C.
D.

8. The dissipation at the collector is zero in the quiescent state and increases with excitation in the case of a

A.
B.
C.
D.

9. Avalanche photodiodes are preferred over PIN diodes in optical communication systems because of

A.
B.
C.
D.

10. If an input signal with non-zero dc component is applied to a low pass RC network, the dc component in the output will be

A.
B.
C.
D.