EXAMIANS
To measure high frequency currents, we mostly use ______ ammeter.
YOUR ANSWER : ?
YOUR ANSWER : ?
The adjustment of position of shading bands, in an energy meter is done to provide
YOUR ANSWER : ?
The terminals across the source are ______________________________ if a current source is to be neglected.
YOUR ANSWER : ?
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is
YOUR ANSWER : ?
The smallest change in measured variable to which instrument will respond is
YOUR ANSWER : ?
A voltmeter using thermocouple measures
YOUR ANSWER : ?
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is
YOUR ANSWER : ?
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be
YOUR ANSWER : ?
An ammeter is ______ instrument.
YOUR ANSWER : ?
The total current I = I1 + I2 in a circuit is measured as I1 = 150 ± 1A , I2 = 250 ± 2A, where the limits of error are as standard deviations. I is measured as
YOUR ANSWER : ?