Which of the following quantities consists of SI unit as WATT ?
(A) Force
(B) Charge
(C) Current
(D) Power(more…)
Which of the following has no units?
(A) Permeability
(B) Moment of a magnet
(C) Magnetic susceptibility
(D) Permittivity(more…)
Which quantity should be measured by the voltmeter ?
(A) Current
(B) Voltage
(C) Power
(D) Speed(more…)
Internal resistance of ideal voltage source is ?
(A) zero
(B) infinite
(C) finite
(D) 100 ohms(more…)
Capacitor does not allow the sudden change of ?
(A) current
(B) voltage
(C) power
(D) None of the above(more…)
Inductor does not allow the sudden change of
(A) current
(B) voltage
(C) power
(D) None of the above(more…)
Which of the following are the passive elements?
(A) Resistor
(B) Bulb
(C) Both
(D) None of thes
(D) (more…)
An SCR is considered to be a semi controlled device because_______?
(A) it can be turned OFF but not ON with a gate pulse.
(B) it conducts only during one half cycle of an alternating current wave.
(C) it can be turned ON but not OFF with a gate pulse.
(D) it can be turned ON only during one half cycle of an AC.