183. Commercial power supplies have voltage regulation
A. of 10%
B. of 15%
C. of 25%
D. within 1%

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184. An ideal regulated power supply is one which has voltage regulation of
A.0%
B.5%
C.10%
D.1%

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185. A zener diode utilises characteristic for voltage regulation.
A. forward
B. reverse
C. both forward and reverse
D. none of the above

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186. Zener diode can be used as
A. d.c. voltage regulator only
B. a.c. voltage regulator only
C. both d.c. and a.c. voltage regulator
D. none of the above

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187. A zener diode is used as a voltage regulating device.
A. shunt
B. series
C. series-shunt
D. none of the above

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188. As the junction temperature increases, the voltage breakdown point for zener mechanism
A. is increased
B. is decreased
C. remains the same
D. none of the above

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189. The rupture of co-valent bonds will occur when the electric field is
A. 100 V/cm
B. 0.6 V/cm
C. 1000 V/cm
D. more than 105 V/cm

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