Electrical Question

• Explain the working principal of the circuit breaker?
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• What happens if i connect a capacitor to a generator load?
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• what is power factor? Whether it should be high or low? why?
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• There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?
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• what is meant by insulation voltage in cables?explain it?
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• what is boucholz relay and the significance of it into the transformer?
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• What is the difference between Isolator and Circuit Breaker?
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• What are the transformer losses?
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• Define IDMT relay?
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• Where should the lighting arrestor be placed in distribution lines?
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• What is the difference between MCB & MCCB,Where it can be used?
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• What is meant by regenerative braking?
• Differentiate PLC vs DCS.?
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• Enlist types of dc generator?
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• 1 ton is equal to how many watts?
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• what is the difference between synchronous generator & asynchronous generator?
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• Give two basic speed control scheme of DC shunt motor?
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• Which type of A.C motor is used in the fan (ceiling fan, exhaust fan, padestal fan, bracket fan etc) which are find in the houses ?
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• What is the significance of vector grouping in Power Transformers?
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• What is 2 phase motor?
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• whats the one main difference between UPS & inverter ? And electrical engineering & electronics engineering ?
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• What will happen when power factor is leading in distribution of power?
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• What is vaccum currcuit breaker.define with cause and where be use it Device?
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• what is ACSR cable and where we use it?
• Which motor has high Starting Torque and Staring current DC motor, Induction motor or Synchronous motor?
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• what happen if we give 220 volts dc supply to d bulb r tube light?
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• State the factors, for the choice of electrical system for an aero turbine.
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• State the methods of improving power factor?
• Mention the disadvantages of low power factor? How can it be improved?
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• Define the following terms:- • Reliability, • Maximum demand, • Reserve-generating capacity, • Availability (operational).
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• Comment on the working principle of operation of a single-phase transformer
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• Explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.
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• Explain different types of D.C motors? Give their applications
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• State Maximum power transfer theorem
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• State Norton’s Theorem
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• State Thevenin’s Theorem:
• Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines, refrigerators, rolling mills, lathes, power factor improvement and cranes.
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• What are the different methods for the starting of a synchronous motor.
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• Explain the application of storage batteries.
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• What is slip in an induction motor?
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• What are the various kind of cables used for transmission?
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• How can you relate power engineering with electrical engineering?
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• What is reverse power relay?
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• What are the differences between an alternator and a generator?
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• What is the difference between Power Transformers and Distribution Transformers?
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• Transformer Testing | Type Test and Routine Test of Transformer
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• What are advantages and disadvantages of corona loss
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