Measurement and Instrumentation The calibration of a voltmeter can be carried out by using An ammeter. A potentiometer. A function generator. A frequency meter. An ammeter. A potentiometer. A function generator. A frequency meter. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following devices may be used for extending the range of instruments? All of the listed here Potential transformers Current transformers Shunt All of the listed here Potential transformers Current transformers Shunt ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A voltmeter has 100 scale divisions and can measure up to 100 V. Each division can be read to ½ division. The resolution of the voltmeter is 1.5 V 2 V 0.5 V 1 V 1.5 V 2 V 0.5 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance in the circuit of the moving coil of a dynamometer wattmeter should be Low High Almost zero None of the listed here Low High Almost zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of Errorneous standardisation. Stray thermal emfs. Ripples of the DC supply. Stray magnetic fields. Errorneous standardisation. Stray thermal emfs. Ripples of the DC supply. Stray magnetic fields. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving iron ammeter may be compensated for frequency errors by Series resistance Shunt capacitance A shunt resistance A series inductance Series resistance Shunt capacitance A shunt resistance A series inductance ANSWER DOWNLOAD EXAMIANS APP
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