RRB/SSC JE Electrical 2019 || Weekly Quiz 6

In ‘Two-wattmeter method’ of power calculation of a 3-phase balanced star connected system, what is the power factor of the system, if one of the wattmeters shows negative reading and the other shows a positive reading?

Which & the following is NOT a feature of MI type instruments?

What is the phase shift (in degrees) between the signals, which is indicated by the Lissajous pattern given below?

What is the angle between (in degrees) the planes of two moving coils & a dynamometer type 3-phase power factor meter?

Determine the fastest rise time (in ms) of a sine wave that is reproduced by a CRO, when the bandwidth of the sine wave is 50 Hz.

Calculate the value of reactive power (in VAR) of a circuit having power factor of 0.8, when the apparent power of the circuit is 200 VA.

Determine the value of current (in mA) for the full-scale deflection of a voltmeter, when the sensitivity of the voltmeter is 50 Ohms/Volt.

How will you convert galvanometer into ammeter?

Which one of the following statement is NOT TRUE about the MI type instruments?

Which one of the following statement is NOT TRUE about multimeter?