Measurement and Instrumentation The problem of Electrostatic coupling in a transformer is acute at High frequencies Low frequencies High load on the transformer Power frequencies High frequencies Low frequencies High load on the transformer Power frequencies ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads 5 V. 0 V. (2 + √3/2)V. 2 V. 5 V. 0 V. (2 + √3/2)V. 2 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly ± 1% ± 2.4% ± 1.4% ± 3.4% ± 1% ± 2.4% ± 1.4% ± 3.4% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used? 99.99 ohms 100 K ohms 100 ohms 99.99 K ohms 99.99 ohms 100 K ohms 100 ohms 99.99 K ohms ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation _______ is used to measure the flow of air around aeroplane. nucleus. Orifice. Venturimeter. Anemometer. nucleus. Orifice. Venturimeter. Anemometer. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The internal resistance of Weston standard cell is of order of 10 ohm. 1 ohm. 1000 ohm. 100 ohm. 10 ohm. 1 ohm. 1000 ohm. 100 ohm. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS