Measurement And Instrumentation - Study Mode

[#216] It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?
Correct Answer

(B) 150W

[#217] The EMF of Weston standard cell is measured using
Correct Answer

(D) Potentiometer

[#218] A mulliammeter can be used as
Correct Answer

(A) Voltmeter and ammeter

[#219] Wagner earthing device is used to eliminate errors due to
Correct Answer

(A) Electrostatic coupling

[#220] The multiplier and the meter coil in a voltmeter are in
Correct Answer

(A) Series