A sensitive galvanometer gives fullscale deflection with 100 mV. If the resistance of the galvanometer is 50? the maximum current that can flow through safely is
A. 2.0 mA
B. 20 mA
C. 200 mA
D. 0.2 mA
A. shunt value decreases
B. shunt value increases
C. shunt value remains the same
D. none of the above
In a multi range ammeter as the range increases Read More »
A. galvanometer
B. voltmeter
C. ammeter
D. AC transformer and DC generator
Which of the following is not an electromechanical instrument ? Read More »
A. zero
B. equal to the restoring couple
C. greater than the restoring couple
D. smaller than the restoring couple
When the coil of the galvanometer is in equilibrium then the deflecting couple is Read More »
A. voltmeter
B. galvanometer
C. cathode ray oscilloscope (CRO)
D. ammeter
Instrument used to measure potential without drawing any current is Read More »
A. E = BeV
B. B = eE/V
C. E = BV
D. E = BeV/2
A. 1T = 103 G
B. 1T = 10-4 G
C. 1T = 10-2 G
D. 1T = 104 G
The relationship between Tesla and smaller unit Gauss of magnetic induction is given by Read More »