Measurement and Instrumentation Which of the following meter is most suitable for measuring radio frequency currents? Moving - iron meter. VTVM. Thermocouple meter. Moving - coil meter. Moving - iron meter. VTVM. Thermocouple meter. Moving - coil meter. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of following are needed both for protection and metering? Energy meter. Instrument transformer. Power factor meters. Wattmeters. Energy meter. Instrument transformer. Power factor meters. Wattmeters. 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% ± 6% ± 7% ± 8% ± 5% ± 6% ± 7% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The internal resistance of an ammeter should be Medium Infinity High Very small Medium Infinity High Very small ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The absolute measurement of resistance is done by Lorenz method Rayleigh method Bridge Method Ohm’s law method Lorenz method Rayleigh method Bridge Method Ohm’s law method ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA? 50 mA. 80 mA. 25 mA. 40 mA. 50 mA. 80 mA. 25 mA. 40 mA. ANSWER DOWNLOAD EXAMIANS APP
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