Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because effect of contact and lead resistance is eliminated. there is no thermo electric emf. resistance variation due to temperature. it has high sensitivity. effect of contact and lead resistance is eliminated. there is no thermo electric emf. resistance variation due to temperature. it has high sensitivity. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following devices may be used for extending the range of instruments? Potential transformers Current transformers Shunt All of the listed here Potential transformers Current transformers Shunt All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is 25 V. 50 V. 100 V. 200 V. 25 V. 50 V. 100 V. 200 V. 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 ± 7% ± 8% ± 6% ± 5% ± 7% ± 8% ± 6% ± 5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Relative error is same as None of these true error. ratio of absolute error and true value. absolute error. None of these true error. ratio of absolute error and true value. absolute error. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Assertion (A) : Precision is a necessary prerequisiteof accuracy. Reason (R) : Precision guarantees accuracy. A is true but R is false A is false bur R is true Both A and R are true and R is the correct explanation of A Both A and R are true but R is NOT the correct explanation of A A is true but R is false A is false bur R is true Both A and R are true and R is the correct explanation of A Both A and R are true but R is NOT the correct explanation of A ANSWER DOWNLOAD EXAMIANS APP
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