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 […]
Electrical Questions
Electrical Engineering Questions
• 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 […]
Electrical Questions
• 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 […]
Important questions on Transformer?
• 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 […]
What would happen if batteries are connected in parallel?
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 […]
Find the resistance of human body?
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 […]