Question No. 1. Which of the following is measured by using a vector voltmeter ? (a) Amplifier gain and phase shift (b) Filler transfer functions (c) Complex insersion loss (d) All of the above Ans: d Question No. 2. When a synchronous motor is running at synchronous speed, the damper winding produces (A) damping torque. (B) eddy current torque. (C) torque aiding the developed torque. (D) no torque. Ans: D Question No. 3. In a Schering bridge the potential of the detector above earth potential is (a) a few volts only (6) 1 kV (c) 5 kV (d) 10 kV Ans: a Question No. 4.In order to reduce the harmful effects of harmonics on the A.C. side of a high voltage D.C. transmission system ______are provided. (A) synchronous condensers (B) shunt capacitors (C) shunt filters (D) static compensators Ans: C Question No. 5. A sensitive galvanometer produces large deflection for a (a) small value of current (b) large value of current (c) large value of power (d
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