Objective Questions Short notes Objective questions (Answers are given below) A given function f (t) can be represented bya Fourier series if it(a) is periodic(b) is single valued(c) has a finite number of maxima andminima in any one period(d) all of the above. In a Fourier series expansion of a periodicfunction, the coefficient a0 represents … Read more
Next Objective Questions Short notes Objective questions (Answers are given below) Non-sinusoidal waveforms are made up of(a) different sinusoidal waveforms(b) fundamental and even harmonics(c) fundamental and odd harmonics(d) even and odd harmonics only. The positive and negative halves of acomplex wave are symmetrical when(a) it contains even harmonics(b) phase difference between even harmonicsand fundamental is … Read more
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) 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