SSC JE Utilization of Electrical Energy Quiz 107

Which of the following will need lowest level of illumination?

Which type of fire extinguisher in not suitable for electric fire

Which type of fire extinguisher is to be used on electrical equipment or installation under fire?

In percussion welding, the heat is produced by a rapid discharge of stored electrical energy from

Spot welding is used to weld metal pieces whose thickness

By adding nearly 1% of cadmium to the copper conductor, we get cadmium copper conductor, which of the following result is obtained?

A 1200-watt lamp has a mean spherical candle power (MSCP) of 1600 watt, is suspended over the working floor. Then calculate the Lamp Efficiency.

What is the unit of luminance?