Page 1024 - Basic Electrical Engineering
P. 1024
c. The ripple factor of an ideal rectified wave should be zero
d. The ripple factor of an ideal rectified wave should be unity.
12. Which of the following is not true for a bridge rectifier?
a. A centre-tapped input side transformer is required
b. Bridge rectifiers offer full-wave rectification
c. At a given time only one pair of diodes are conducting
d. Ripple factor of a bridge rectifier is 0.48.
13. Conduction in a bipolar transistor takes place due to
a. electrons only
b. holes only
c. both electrons and holes
d. majority carriers only.
14. Which one of the following is not a region of operation of a transistor?
a. Cut-off region
b. Active region
c. Saturation region
d. Cut-in region.
15. Which one of the following is not the configuration of a transistor?
a. Common–collector configuration
b. Common–emitter configuration
c. Common–base configuration
d. Maximum current gain configuration.
16. Transistor can be used as an amplifier when it is operated
a. in the saturation region
b. in the cut-off region
c. in the active region
d. in both saturation and cut-off regions.
17. Which of the following is not true for a properly biased transistor?
a. Can work as a current amplifier
b. Can work as a voltage amplifier
c. Can work as a switch
d. Can work as a rectifier.
18. MOSFET stands for
a. metal oxide silicon field effect transistor
