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Multiple Choice Question (MCQ) of Measurements page-18


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171. Which of the following is used to measure the low impedance components?

a) Series connection Q-meter
b) Parallel connection Q-meter
c) (a) or (b)
d) None of the above

Ans: (a)

172. Which of the following is used to measure the high impedance components?

a) Parallel connection Q-meter
b) Series connection Q-meter
c) (a) or (b)
d) (a) and (b) simultaneously

Ans: (a)

173. Ballastic galvanometer can be used to measure the mutual inductance.

a) True
b) False

Ans: (a)

174. Which of the following bridge is called Wein-bridge?

a) A
b) B
c) C
d) D

Ans: (c)

175. Which of the following bridge will be used to measure the low values of resistance?

a) Wein bridge
b) Maxwell bridge
c) Schering bridge
d) Anderson bridge

Ans: (b)

176. What will happen when quartz (SiO2) crystal is compressed?

a) The size of the crystal will be reduced
b) There will be a great amount of heat because of molecules movement
c) The electrical changes will be set up across the crystal ends
d) The crystal will melt

Ans: (c)

177. The quartz (SiO2) crystal is compressed to develop the voltage across the ends, this phenomenon is known as :

a) Voltaic effect
b) Piezo-electrical effect
c) Hall effect
d) Photo-voltaic effect

Ans: (b)

178. A switchgear control consists of

a) A main switch to isolate the apparatus from the supply
b) Fuses
c) Circuit breaker and fuses
d) Overvoltage relay
e) Interlocks and earth connections
f) (a), (c), (d) and (e)

Ans: (f)

179. The peak factor of the sinusoidal wave is defined as :

a) (r.m.s. Voltage)/(peak Voltage)
b) (Peak Voltage)/(r.m.s. Voltage)
c) (Peak Voltage)/(Average Voltage)
d) (Peak Voltage)/(d.c. Voltage)

Ans: (b)

180. In the peak voltage is to be measured by “Rectified Capacitor Charging Current Method”, the peak voltage is given by :

a) Iaverage/(4 cf)
b) Irms/(4 cf)
c) Idc/(4 cf)
d) Iaverage/cf

Ans: (a)


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