⚡ELECTRICAL STUDY⚡

The colour of light emitted by sodium vapour discharge lamp when glowing steadily, is

The source of illumination for a cinema projector is_________

The SI unit of luminous flux is-

The stator and the rotor of a 3-phase 4-pole wound rotor induction motor are excited, respectively, from a 50 Hz and a 30 Hz source of appropriate voltage. Neglecting all losses, what is/are the possible no-load speed/speeds at which the motor would run?

The input to a 3-phase induction motor is 50 kW. The stator losses amount to 800W. The rotor Cu loss per phase is (slip = 3%)

Which of the following statements about an Insulated Gate Bipolar Transistor (IGBT) is NOT true?

In a parallel resonance circuit, the admittance is:

A 3-phase supply feeds a load consisting of three equal star-connected resistors. If one of the resistors is removed, the load power is:

A squirrel-cage induction motor having a rated slip of 4% on full load has a starting torque same as the full load torque. Which one of the following statements is correct?

During the process of electrolysis, when the same quantity of electricity is passed through different electrolytes, the mass of substances deposited is proportional to:

Which of the following batteries does not require trickle charging?

Which of the following is NOT a commonly used fuel for nuclear power plants?

Which of the following is NOT true for a common collector transistor?

A hybrid VR stepping motor has 8 main poles, which have been castellated to have 5 teeth each. If the rotor has 50 teeth, calculate the stepping angle.

Which of the following is the best, considering the speed of operation?

A measuring instrument is said to be a 'deadbeat' when the instrument is______

What is the magnetising component (Im) of no load current (lo) wherein primary voltage is V1?

The armature of a three-phase alternator has 240 slots. The armature has 8 poles. Its distribution factor is_________

The state of charge of a battery is defined as