Page 1058 - Basic Electrical Engineering

4. Rectifier efficiency of a half-wave and full-wave rectifier circuit, respectively are

a. 40.6% and 81.2%
b. 20.3% and 81.2%
c. 40.6% and 91.2%
d. 20.3% and 40.6%.

5. Ripple factor for a half-wave and full-wave rectifier circuit, respectively are

a. 0.48 and 1.21
b. 0.48 and 0.121
c. 4.8 and 1.21
d. 8.21 and 0.48.

6. Peak inverse voltage is defined as the

a. Minimum voltage that appears across the diode when it is forward biased
b. Minimum voltage that appears across the diode when it is reverse biased
c. Maximum voltage that appears across the diode when it is reverse biased
d. Minimum voltage that appears across the diode when it is reverse biased.

7. In a capacitor filter circuit, a capacitor is connected

a. In series with the load and it allows dc current to flow through it
b. In parallel with the load and it allows ac but blocks dc
c. In parallel with the load and it allows dc but blocks ac
d. In series with the load and it allows ac and blocks dc.

8. A clamping circuit

a. adds a dc component to an ac signal in either direction
b. adds an ac component to a dc signal in either direction
c. adds a dc component to an ac signal in positive direction only
d. adds a dc component to an ac signal in negative direction only.

Answers to Multiple Choice Questions
1. (b) 2. (c) 3. (a) 4. (a) 5. (d)

6. (c) 7. (b) 8. (a)