An instrument to be used for measurement and control should preferably have A highly damped response Dead zone and dead time Linear output and fast response Non-linear output TRUE ANSWER : ? YOUR ANSWER : ?
The resistance can be measured most accurately by Voltmeter-ammeter method Multimeter Megger Bridge method TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following meters has maximum loading effect on the circuit under measurement ? 1000 Ω/volt 10 MΩ/volt 1 MΩ/volt 100 Ω/volt TRUE ANSWER : ? YOUR ANSWER : ?
Electrostatic instruments are normally used for High current measurements Low voltage measurements High voltage measurements Low current measurements TRUE ANSWER : ? YOUR ANSWER : ?
Why is a MISC meter not recommended for DC measurement? The error is high due to hysteresis effect The error is high due to eddy current effect The meter is calibrated for AC and it’s error for DC would be high The meter does not respond to DC signals TRUE ANSWER : ? YOUR ANSWER : ?
An induction wattmeter can be used for Both DC and AC Ac only Any of the listed here Dc only TRUE ANSWER : ? YOUR ANSWER : ?
A megger is usually Moving coil type instrument Electro-static type instrument Moving iron type instrument Hot-wire type instrument TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following instruments can be used to measure AC current only? Permanent Magnet Type ammeter Moving iron ammeter Moving iron voltmeter Induction type ammeter TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following devices may be used for extending the range of instruments? Shunt All of the listed here Potential transformers Current transformers TRUE ANSWER : ? YOUR ANSWER : ?
For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is 1.2% 5.2% 25.2% 10.2% TRUE ANSWER : ? YOUR ANSWER : ?