Q.106 The negative maximum value of cosine wave occurs at __. A. 0º B. 90º C. 180º D. 270º Ans.: C Q.107 the average value of sin2Ѳ over a complete cycle is__ A. 1/2 Read More …
Category: AC Fundamental
Basic Electrical Engineering MCQ_76_1(AC Fundamental)
Q.91 The two alternating current IAand IB are said to be out of phase with each other if the phase difference between them is ___ (leading or lagging). A. 180º or 2л B. 180º or л C. Read More …
Basic Electrical Engineering MCQ_75_1(AC Fundamental)
Q.76 which of the following is correct representation of v(t) = Vm sin (ωt + ф)? A. Vm = r ∠ ф B. v(t) = r ∠ Vm C. v(t) = r ∠ ф D. v(t) Read More …
Basic Electrical Engineering MCQ_74_1(AC Fundamental)
Q.61 Most electrical measuring instruments are constructed to read ___ of voltage and current being measured. A. effective value B. r.m.s value C. virtual value D. all of the above Ans.: D Q.62 The voltage and Read More …
Basic Electrical Engineering MCQ_72_1(AC Fundamental)
Q.46 For sine wave half cycle average value if given by A. 0.637 x maximum value B. 2 x maximum value/л C. Both A and B D. 2 x maximum value Ans.: C Q.47 which of Read More …
Basic Electrical Engineering MCQ_71_1(AC Fundamental)
Q.31 Why the designers of ac generators try always to obtain a waveform approximating as closely as possible to that of a pure sine wave? A. sine wave greatly simplifies the theory and calculations of ac circuits B. Read More …
Basic Electrical Engineering MCQ_70_1(AC Fundamental)
Q.16 The time required to complete one cycle is called___. A. period time B. rotational C. frequency D. angular momentum Ans.: A Q.17 The unit of period is__ A. meter B. second C. Read More …
Basic Electrical Engineering MCQ_69_1(AC Fundamental)
Q.1 An Alternating quantity which change its ___. A. direction only B. magnitude only C. direction and magnitude D. none of the above Ans.: C Q.02 An alternating current or voltage is any current that varies Read More …