Measurement and Instrumentation The problem of Electrostatic coupling in a transformer is acute at Low frequencies Power frequencies High load on the transformer High frequencies Low frequencies Power frequencies High load on the transformer High frequencies ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as 1000 rev/KWh. 3750 rev/KWh. 3600 rev/KWh. 960 rev/KWh. 1000 rev/KWh. 3750 rev/KWh. 3600 rev/KWh. 960 rev/KWh. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be ± 8% ± 5% ± 7% ± 6% ± 8% ± 5% ± 7% ± 6% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is 1.5 V. 1.34 V. 1 V. 1.7 V. 1.5 V. 1.34 V. 1 V. 1.7 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To measure ac as well as dc power, we use Induction wattmeter Dynamometer wattmeter Sometimes induction and sometimes dynamometer wattmeter None of the listed here Induction wattmeter Dynamometer wattmeter Sometimes induction and sometimes dynamometer wattmeter None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Attraction and repulsion type instruments are the two different types of which instrument ? Moving iron type. Induction type. Dynamo-meter type. Multipliers. Moving iron type. Induction type. Dynamo-meter type. Multipliers. ANSWER DOWNLOAD EXAMIANS APP
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