BARC OCES 2022 Quiz 1

For the voltage equation v = 220sin314t. The crest factor is_______

From the point of safety, the resistance of earthing electrode should be

A fuse should be connected in ____in the ____ conductor.

Moire fringes are used to measure rotary displacement along with _________.

Which of the following is the unit of brightness?

In the heating process of the ________type a simple method of temperature control is possible by means of a special alloy which loses its magnetic properties at a particular high temperature and regains them when cooled to a temperature below this value.

In an electronic circuit transistor is used for switching ON and OFF a relay, when the transistor switches OFF the relay, a higher voltage appears across the transistor. How can a transistor be protected from this voltage?

The waveform given in the figure below is an example of ________ waveform

What is the magnitude of reactive power (in kVAR) of a balanced 3-phase delta connected system having a line voltage of 400 V and a line current of 50 A and the phase difference between the voltage and current is 53.13 degrees?