Electric Circuits A wire of resistance R has it length and cross - section both doubled. Its resistance will become 2R. R. 4R. 0.5R. 2R. R. 4R. 0.5R. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits An electric field line and an equipotential surface are always parallel. none of above. inclined at any angle. always perpendicular. always parallel. none of above. inclined at any angle. always perpendicular. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The rms value of the voltage U(t)= 3 + 4cos(3t) {3 + 2(1.141)} V. 4.123 V. 5 V. 7 V. {3 + 2(1.141)} V. 4.123 V. 5 V. 7 V. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Sulphation in a lead acid battery occurs due to trickle charging. incomplete charging. fast charging. heavy charging. trickle charging. incomplete charging. fast charging. heavy charging. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is referred as the average value in AC opearation? Average of all values of an alternating quantity. Average of all values of an alternating quantity over a complete cycle. Average of all values of the phase sequences. Average of all values of the (+)ve and (-)ve half. Average of all values of an alternating quantity. Average of all values of an alternating quantity over a complete cycle. Average of all values of the phase sequences. Average of all values of the (+)ve and (-)ve half. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Phase voltages of a star connected alternator are ER = 240∠0o V, EY = 240∠-120o V and EB = 240∠ + 120o V. What is the phase sequence of the system? RYB. YBR. RBY. BYR. RYB. YBR. RBY. BYR. ANSWER DOWNLOAD EXAMIANS APP
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