Electrical And Electronic Measurement MCQs
Practice free Electrical And Electronic Measurement multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 288 questions — no login required.
Question 255easy
A sinusoidal source of voltage V and frequency f is connected to a series circuit of variable resistance, R and a fixed reactance,X. The locus of the tip of the current-phasor, I, as R is yarded from 0 to 00 is
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Question 256easy
A d.c. voltmeter has a sensitivity of 1000 0./volt. When it measures half full scale in 100V range, the current through the voltmeter is
Question 257easy
Electrodynamic type wattmeters have large errors while measuring power in ac circuit at low power factor conditions, since the voltage across and the current through the
Question 258easy
The two wattmeter method is used to measure active power on a three phase, three wire system. If the phase voltage is unbalanced, then the power reading is
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Question 259easy
The minimum number of wattmeter (s) required to measure 3-phase, 3-wire balanced or unbalanced power is
Question 260easy
A current impulse, 58(t), is forced through a capacitor C. The voltage Ve(t), across the capacitor is given by
Question 261easy
A de potentiometer is designed to measure up to about 2 V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of the test cell is