## Analog Electronics problems

• 1. Which power amplifier can deliver maximum load power?

• Options
• A. Class A
• B. Class AB
• C. Class B
• D. Class C
• 2. A half wave diode circuit using ideal diode has an input voltage 20 sin ?t volts. Then average and rms values of output voltage are

• Options
• A. and 10 V
• B. and 10 V
• C. and 5 V
• D. and 5 V
• 3. In figure v1 = 8 V and v2 = 8 V. Which diode will conduct?

• Options
• A. D1 only
• B. D2 only
• C. Both D1 and D2
• D. Neither D1 nor D2
• 4. Negative feedback reduces noise originating at the amplifier input.

• Options
• A. True
• B. False
• 5. Which of the following oscillators is suitable for frequencies in the range of mega hertz?

• Options
• A. RC phase shift
• B. Wien bridge
• C. Hartley
• D. Both (a) and (c)
• 6. In figure the saturation collector current is

• Options
• A.
• B.
• C.
• D. none of the above
• 7. In figure what is value of IC if ?dc = 100. Neglect VBE

• Options
• A. 5 mA
• B. 5 ?A
• C. 10 mA
• D. 10 ?A
• 8. In class C operation of an amplifier circuit, the collector current exists for

• Options
• A. 360° of input wave
• B. 180° of input wave
• C. more than 180° of input wave
• D. less than 180° of input wave
• 9. Assertion (A): For large signal variations an amplifier circuit has to be analysed graphically

Reason (R): The output characteristics of a transistor is nonlinear.

• Options
• A. Both A and R are correct and R is correct explanation for A
• B. Both A and R are correct but R is not correct explanation for A
• C. A is correct R is wrong
• D. A is wrong R is correct
• 10. In figure, VEB = 0.6 V, ? = 99. Then VC and IC are

• Options
• A. 9.3 V and 1.98 mA respectively
• B. 4.6 V and 1.98 mA respectively
• C. 9.3 V and 0.02 mA respectively
• D. 4.6 V and 0.02 mA respectively