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Multiple Choice Question (MCQ) of Power Systems page-19


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201. The capacitance of the transmission line will be affected if the distance between conductors and earth is varied.

a) True
b) False

Ans: (a)

202. The inductance of the transmission line will be affected if the distance between conductors and earth is varied.

a) True
b) false

Ans: (b)

203. The sending end voltage of the transmission line controls the

a) active power
b) reactive power
c) (a) and (b) both
d) None of the above

Ans: (b)

204. The frequency of the power system control the

a) Active power
b) Reactive power
c) (a) and (b) both
d) None of them

Ans: (a)

205. Which of the following equipment one will choose to study the stability of A.C. power system?

a) Energy meter
b) Network analyser
c) Network synthesizer
d) (b) or (c)

Ans: (b)

206. The breaking torque which plugging the machine at zero speed will be

a) Zero
b) High
c) Small
d) None of the above

Ans: (b)

207. The dynamic breaking of the machine offers the highest breaking torque in comparison to other breaking methods.

a) True
b) False

Ans: (b)

208. The drop in the terminal voltage of the shunt generator on load may be attributed to

a) Increase in armature resistance
b) Drop in field current due to armature reaction
c) Drop in field current due to drop in armature resistance
d) (b) and (c) both

Ans: (d)

209. If the load is not connected to the d.c. series motor then

a) It will not build up the voltage
b) It will build up very high voltage
c) It will have very low speed (d) none of the above

Ans: (a)


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