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Electrical Questions

Electrical Engineering Interview Questions and Answers

November 22, 2017 by admin

What is Main Difference b/w Electrical and Electronics Engineering? Why shunt capacitor bank used in substation?  Why all the voltage levels are multiples of 11 kV? What causes an electric shock, current or voltage? Why Motor rated in kW instead of kVA? How to convert KVA to KW? Why is AC considered more efficient than […]

Filed Under: Electrical Questions, Uncategorized Tagged With: Electrical Engineering Interview Questions and Answers

Electrical Engineering Questions

August 21, 2017 by admin

• Do you know how to measure the earth resistance? Actually the Earth resistance is measured using “earth resistance meter”. You might have also heard that using megger, but megger is used only for high resistance measurement i.e., in Mega ohms but when considereing upon earth resistance it should not exceed 1ohm so earth resistance […]

Filed Under: Electrical Questions

Electrical Questions

May 19, 2017 by admin

• Which bulb will glow brighter? When a 60 W, 200 V bulb is connected in series with 100 W, 200 V bulb across a 200 V A.C. power supply, which bulb will glow brighter? Solution: 60 Watt bulb will glow brighter then 100 Watt bulb. Why ? When two bulb are connected in series across a power supply, the voltage […]

Filed Under: Electrical Questions

Important questions on Transformer?

April 7, 2017 by admin

 • Why transformers are rated in kVA, not in kW?   Power rating of a transformer or any electric machines indicates the maximum value of voltage and current it can carry without over-heating. Power  = Voltage(V) × Current(A) × Power factor   As transformer is consider as a power source while the induction motor is considered […]

Filed Under: Electrical Questions

What would happen if batteries are connected in parallel?

March 30, 2017 by admin

What would happen if two batteries are connected in parallel? Battery is a device that supply electrical energy to electrical circuit. It convert stored chemical energy into electrical energy. There are two terminals in a battery. The terminal with higher potential is called positive terminal and terminal with lower potential is called negative terminal. The […]

Filed Under: Electrical Questions

Find the resistance of human body?

March 28, 2017 by admin

Find the resistance of human body? Problem 1:  A person touches live wire of a 100 watt closed circuit. If supply voltage is 200 volt and total current flow in a circuit (when touches) is 0.55 ampere, then find the resistance of the human body? Solution: The circuit shown in diagram is similar to a […]

Filed Under: Electrical Questions

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