Measurement and Instrumentation The problem of Electrostatic coupling in a transformer is acute at High frequencies Power frequencies Low frequencies High load on the transformer High frequencies Power frequencies Low frequencies High load on the transformer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The thermocouple instruments do not have High degree of measuring accuracy Independence of ambient temperature Absence of frequency error High sensitivity High degree of measuring accuracy Independence of ambient temperature Absence of frequency error High sensitivity ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The operating voltage of a megger is about 12 V 100 V 6 V 40 V 12 V 100 V 6 V 40 V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read + 795 W. - 597 W. + 597 W. - 795 W. + 795 W. - 597 W. + 597 W. - 795 W. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is One international ohm One ohm according to working standards Standard ohm One ohm according to SI units One international ohm One ohm according to working standards Standard ohm One ohm according to SI units ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When using ohmmeter, applied voltage is to be disconnected from the circuit because None of these Voltage source will increase resistance The ohmmeter has its own internal battery Current will decrease resistance None of these Voltage source will increase resistance The ohmmeter has its own internal battery Current will decrease resistance ANSWER DOWNLOAD EXAMIANS APP
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