Question No. 1. The power factor of a squirrel cage induction motor is (A) low at light load only. (B) low at heavy load only. (C) low at light and heavy load both. (D) low at rated load only. Ans: A Question No. 2. Systematic errors are (a) instrumental errors (b) environmental errors (c) observational errors (d) all of the above Ans: d Question No. 3. Which of the following statements is correct for any closed loop system ? (a) All the co-efficients can have zero value (6) All the co-efficients are always non-zero (c) Only one of the static error co-efficients has a finite non-zero value (d) None of the above Ans: c Question No. 4 The temperature of resistance furnaces can be controlled by changing the: (A) applied voltage (B) number of heating elements (C) circuit configuration (D) All of the above Ans: D Question No. 5. A Weston synchronoscope is a (a) moving coil instrument (b) moving iron instrument (c) dynamometer instru...
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