A voltage of 2.70 V is being measured by an analog indicating instrument having a scale range of 0 – 5.0 V. If the instrument reads 2.65 V, then absolute error in measurement is 0.01V 0.05V 0.25V 0.01V TRUE ANSWER : ? YOUR ANSWER : ?
The smallest change in measured variable to which instrument will respond is precision. resolution. accuracy. sensitivity. TRUE ANSWER : ? YOUR ANSWER : ?
In a gravity controlled instrument, the deflection angle is proportional Sine of the measurand Measurand Sine inverse of measurand Square of the measurand TRUE ANSWER : ? YOUR ANSWER : ?
A set of independent current measurements taken by four observers was recorded as : 117.02 mA, 117.11 mA, 117.08 mA and 117.03 mA. What is the range of error ? ± 0.065 ± 0.056 ± 0.054 ± 0.045 TRUE ANSWER : ? YOUR ANSWER : ?
If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then V1 = 200V and V2 = 300V. V1 = 0V and V2 = 0V. V1 = 300V and V2 = 200V. V1 = 250V and V2 = 250V. TRUE ANSWER : ? YOUR ANSWER : ?
A 10MHz CRO has 5MHz sweep 10MHz supply frequency 10MHz horizontal oscillator 10MHz vertical oscillator TRUE ANSWER : ? YOUR ANSWER : ?
A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is 94.6o. 85.4o. 175.4o. 4.6o. TRUE ANSWER : ? YOUR ANSWER : ?
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be 260 V. 248 V. 252 V. 250 V. TRUE ANSWER : ? YOUR ANSWER : ?
For measuring a very high resistance we should use Kelvin's double bridge Megger Wheat stone bridge None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?