Electrical Engineering Quiz

Production of heat due to current is related by which law:-

Mercury as a electric contact material is:-

The %age O2 by weight in atmosphere air is:-

Low resistivity materials are used in _________:-

Conductance is expressed in term of:-

A negatively charged particle present in an atom:-

A steady current passes through a cylindrical conductor. Then the electric field inside the conductor is;-

At parallel resonance , the line current is:-

Which circuit  elements stores energy  in the electromagnetic field:-

At series resonance the phase angle between applied voltage and  circuit is :-

Which one will have the lowest cathode current density:-

An SCR has _____________ terminals:-

Gas is usually not liberated  due to dissociation of transformer  oil unless the oil temperature exceed:-

An SCR is turned off by reducing anode voltage to ________________:-

The main drawback of a feedback system is :-

Aluminium has a specific gravity of:-

A class C amplifier always driven ________ load:-

The maximum efficiency of resistance  loaded class A power amplifier is:-

What is the safe working temperature  for a conductor  in case of armoured cables:-

A wet battery cover in case of lead acid battery indicates:-

Variable resistors are:-

The current in 4 ohm resistor will be:-

In Edison cell the concentration of electrolyte;-

In an Edison cell, the electrolyte used is:-

What is the value of capacitance to neutral for  the two wire line;-