Objective Questions Short notes Objective questions (Answers are given below) The minimum number of wattmeter (s) requiredto measure 3-phase, 3-wire balanced orunbalanced power is(a) 1(b) 2(c) 3(d) 4(GATE 2001) A wattmeter reads 400 W when its current coilis connected in the R phase and its pressurecoil is connected between this phase and theneutral of a … Read more
Objective Questions Short notes Objective questions (Answers are given below)
Objective Questions Short notes Objective questions (Answers are given below) The decibel is a measure of(a) power (b) voltage(c) current (d) power level When the output voltage level of a filterdecreases by – 3 dB, its absolute valuechanges by a factor of(a) 2 (b) 1/ 2(c) 2 (d) 1/2 The frequency corresponding to half-powerpoint on … Read more
Objective Questions Short notes Objective questions (Answers are given below) Maxwell-Wien bridge is used for measuring(a) capacitance (b) dielectric loss(c) inductance (d) phase angle Maxwell’s L/C bridge is so called because(a) it employs L and C in two arms(b) ratio L/C remains constant(c) for balance, it uses two oppositeimpedances in opposite arms(d) balance is obtained … Read more
Objective Questions Short notes Objective questions (Answers are given below)