⚡ELECTRICAL STUDY⚡

How many cells, each having an emf of 1.5 V and internal resistance of 0.25 Ω, would be required (connected in series) to pass a current of 1.5 A through a resistance of 15 Ω?

Why is the rotor bar of the squirrel cage rotor permanently short-circuited at the ends?

An inductor having an inductance of 0.14 H and a resistance of 6 Ω is connected in series with a capacitor across 50 Hz Supply. Calculate the capacitive reactance required to give the circuit power factor 0.6 lagging Assume supply voltage to be sinusoidal

Which of the following is a non-contact instrument used in energy audit exercises for speed measurement?

Which of following statements is true for a slip ring induction motor?

Which of the following is NOT a possible system of electric power transmission?

What is the range of operating power factor for any given RC series circuit?

Which of the following are independent of circuit voltage? 1. Current 2. Bandwidth 3. Quality factor 4. Resonant frequency

What is medium voltage, according to IE Rule 28?

The corona loss on a particular system at 50Hz is 1kW/ph/km. What will be the corona loss on the same system with the supply frequency 25 Hz?

Self-inductance of the conductor is one of the reasons for:

Corona loss is less when the shape of the conductors is

The current drawn by the line due to corona losses is

In the overhead system, the maximum disruptive stress exists between the:

Which of the following formula is correct for Reduction Factor (R) in illumination?

According to Lambert's Cosine Law of Illumination, the illumination at any point on a surface is proportional to the cosine of the angle between_________

100 V lamp takes a current of 2 A. If the total flux is 3600π find the mean spherical candle- power of the lamp.