Power dissipation in ideal inductor is

Related Mcqs:

1. What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?

   A. 20%
   B. 80%
   C. 40%
   D. 50%

2. Instantaneous power in inductor is proportional to the

   A. product of the instantaneous current and rate of change of current.
   B. square of instantaneous current.
   C. square of the rate of change of current.
   D. Temperature of the inductor.

3. If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least___________________?

   A. 5 W
   B. 33 W
   C. 75 W
   D. 1 W

4. In a series–parallel circuit, individual component power dissipation are calculated using_____________?

   A. individual component parameters
   B. a percent of the total power depending on resistor ratios
   C. total current squared multiplied by the resistor values
   D. a percent of the voltage division ratio squared

5. The voltage induced in an inductor is represented as,

   A. product of its inductance and current through it.
   B. ratio of its inductance to the current through it.
   C. ratio of the current through it to its inductance.
   D. product of its inductance and rate of change of current through it.

6. Inductor does not allow the sudden change of

   A. current
   B. voltage
   C. power
   D. None of the above

7. The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?

   A. 10 W
   B. 15 W
   C. 5 W
   D. 20 W

8. The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?

   A. Transistor
   B. Biasing circuit
   C. Collector supply VCC
   D. None of the above

9.  If P is the power of a star connected system then what will be power of an equivalent delta connected system?

   A. P
   B. 3P
   C. P/3
   D. None of the above

   Updated by: muhammad rahim

10. The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor ?

    A. 20 W
    B. 40 W
    C. 10 W
    D. 80 W