In a wheatstone bridge, a change of 6 Ω in the unknown arm of bridge is required to produce a change in deflection of 2.4 mm of the galvanometer. The sensitivity is 0.8 mm/Ω 0.4 mm/Ω 5.0 mm/Ω 2.5 mm/Ω TRUE ANSWER : ? YOUR ANSWER : ?
The difference between the indicated value and the true value of a quantity is Absolute error Gross error Relative error Dynamic error TRUE ANSWER : ? YOUR ANSWER : ?
A power factor meter has One current circuit and two pressure circuits Two current circuit and one pressure circuit None of the listed here One current circuit and one pressure circuit TRUE ANSWER : ? YOUR ANSWER : ?
Potentiometer method of DC voltage measurement is more accurate than direct measurement using a voltmeter because It does not load the circuit at all. It uses centre zero galvanometer instead of voltmeter. It loads the circuit moderately. It loads the circuit to maximum extent. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following cannot be measured by multimeters? Voltage Frequency Resistance Current TRUE ANSWER : ? YOUR ANSWER : ?
The form factor in AC is the ratio of Peak value to average value Rms value to peak value Rms value to average value Peak value to rms value TRUE ANSWER : ? YOUR ANSWER : ?
Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current. Both A and R are true and R is not correct explanation of A. A is ture and R is false. Both A and R are true and R is correct explanation of A. A is false and R is ture. TRUE ANSWER : ? YOUR ANSWER : ?
The high torque to weight ratio in an analog indicating instrument indicates low friction loss. none of these. nothing related to friction loss. high friction loss. TRUE ANSWER : ? YOUR ANSWER : ?
An instrument to be used for measurement and control should preferably have A highly damped response Non-linear output Linear output and fast response Dead zone and dead time TRUE ANSWER : ? YOUR ANSWER : ?
What is the expression for acceleration? Force x displacement Mass x velocity Change in velocity / time Mass x acceleration TRUE ANSWER : ? YOUR ANSWER : ?