electrical science

definition of current?

• flow of newtrons

• flow of electrons

• flow of protons

• none

function of motor is.........

• convert mechanical energy into electrical

• convert chemical energy into electrical

• convert electrical energy into mechanical

• none

function of generator is.......

• convert electrical energy into mechanical

• convert mechanical energy into electrical

• convert chemical energy into mechanical

• convert kinetic energy into potential

Ohm's law is not applicable to

• semi conductors

• DC circuits

• small resistors

• high currents

A closed switch has a resistance of ...

• 0

• 50ohms

• 500 ohms

• infinity

A CRO is a

• cathode Ray oscillator

• cathode ray oscilloscope

• capacitor-resistor oscillator

• capacitor-resistor output

A DC voltage........

• rise and falls

• is a sine wave

• remains constant

• is an audio waveform

The property of a conductor due to which it passes current is called

• resistance

• reluctance

• conductance

• Inductance

the number of electrons in the outer most orbit of carbon atom is

• 3

• 4

• 6

• 7

which of the following circuit breaker is used in the Railway electrification

• SF6 circuit breaker

• air blast circuit breaker

• bulk oil circuit breaker

• minimum oil circuit breaker