Electrical JE MCQs (UPPCl JE, SSC JE, PGCIL DIPLOMA TRAINEE,UPMRC JE, NHPC JE )

An electric filament bulb can be worked from ? D.C. supply only A.C. supply only Battery supply only All above ✅

A substance whose molecules consist dissimilar atoms is called ? semi-conductor super-conductor compound ✅ insulator

A field of force can exist only between ? two molecules two ions ✅ two atoms two metal particles

The minimum charge on an ion is ? equal to the atomic number of the atom equal to the charge of an electron ✅ equal to the charge of the number of electrons in an atom zero

Whether circuit may be AC. or D.C. one, following is most effective in reducing the magnitude of the current ? Reactor Capacitor Inductor Resistor ✅

When electric current passes through a metallic conductor, its temperature rises. This is due to ? collisions between conduction electrons and atoms ✅ the release of conduction electrons from parent atoms mutual collisions between metal atoms mutual collisions between conducting electrons

Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct ? 100 W lamp will glow brighter 40 W lamp will glow brighter ✅ Both lamps will glow equally bright 40 W lamp will fuse

Insulating materials have the function of ? preventing a short circuit between conducting wires preventing an open circuit between the voltage source and the load ✅ conducting very large currents storing very high currents