If an Electical Engineer , brush up these Qs

What is the difference between neutral and earth?
Why is alternating current used for transmission?
What is corona?
What is skin effect?
Why is the voltage stepped up before transmission?
What are the standard transmission and distribution voltages?
Explain transmission and distribution systems?
What are lightening arrestors?
What is the difference between an insulator and a dielectric?
Explain the principle of operation of relay and a circuit breaker?
What is 3-phase supply?
What is a busbar?
What are the disadvantages of low power factor?
What is arc formation?
Why do we require protection against lightening?
What is substation?
What is grading of a cable?
What are transmission cables made of?
What is the purpose of a fuse?
Explain the power rating of this bulb, say 60W, what if the voltage changes?
Why is the earth pin in a 3-pin plug the longest and the thickest?
Which is the motor used in fan ?
Explain the basic operation of dc motor / generator, induction motor, synchronous motor, stepper motor, and repulsion motor.
What is hysteresis loss?
Why do we use a starter for a dc Motor?
What are back emf, commutation, armature reaction, stray losses; and breakdown torque?
Why is an induction motor called a rotating transformer?
What is slip?
What is the purpose of compensating winding?
What will happen if you supply a fan with dc?
What is cogging and crawling?
Why shouldn’t you start a shunt motor on a heavy load?
What are dummy coils?
What are CT and PT?
What is voltage build up of a generator?
What is a universal motor?
Why is transformer rating in KVA?
What is voltage regulation?
Why is transformer flux constant?
Why is an induction motor used for most domestic applications?
What is regenerative braking?
Give an example where a transformer is used in a dc application.
What is the problem with a fan that does not rotate unless rotated manually to start?
What are brushless alternators?
What are equalizer rings used for?
What are interpoles used for?
What is eddy current loss?
What is plugging of an induction motor?
What is the principle of operation in a tube light?
What are the advantages and disadvantages of compact fluorescent lamps?
Which is more dangerous - shock due to ac or dc?
What is an UPS?
What is the approximate power production capacity of India / Kerala?
Principle of dc motor?
Uses of servomotor.
How do you specify the rating of transformer?
How is speed control of ac motors achieved?
Differentiate MC and MI instruments.
What are integrating instruments? Give examples?
Users of PLL circuits.
How do you convert fixed ac to variable dc?
Purpose of testing thyristors in speed control of drives.
Uses of Schmidt trigger circuits.
How can you eliminate noise in digital circuits?
Explain low pass filter?
How is the alternator synchronized to the main busbar?
What is a Scott connected transformer?
What is commutation in dc machines?
What are damper windings?
What are cooling methods used to cool a transformer?
Can you start a series motor without load? If no, why?
Draw the equivalent circuit of a transformer.
What is R model of a circuit?
What is specified in synchronous watts?
How are lines affected due to switching operations?
Is there any difference between the circuit breakers and the isolators?
What do we prefer, overhead cables or underground cables?
Is corona more in dc lines or ac lines?
Are single induction motors self-starting?
In a delta connected circuit are 3rd harmonics present?
What is a shunt?
What is phase swinging?
What is phase margin?
What type of motor is needed in hoists?
What is IDMT? What is principle?
What is current chopping?
Which circuit breaker uses current chopping circuit?
Can an inverter be used as a converter? How?
What are the types of faults that can occur in a 3-phase line?
What is a ground line?
What is form factor?
What is an oscillator?
Does an oscillator have input? If so, draw it?
What is modulation?
How do you start an induction motor?
Which type of luminance has greater visibility - GLS or FL?
How would you conserve electricity at home, being an electrical engineer?
What is the generating voltage in India?
Which generating station in Kerala has the largest capacity?
Which is the oldest generating station in Kerala?
What is SEADA?
Why do we use a wave trap, draw the circuit?
What is power line communication?
What is the difference between an overcurrent relay and a fuse?
How can you control the output voltage in an inverter and converter?
How can you decrease the harmonics in a wave form?
What are travelling waves?
What is the general industrial power factor in India?
What is diversity factor?
Why is the wave form sinusoidal?
Practical applications of variable resistance
Explain the working of a ceiling fan?
What are the equipment in a substation?
What are instrument transformers?
Name the thyristor that can be turned off by applying signals to its gate terminal.
What is the significance of having 11KV as the generation voltage?
Effect of a free wheeling diode?
What is a page hit?
What is cache memory?
What do the three pins of a socket represent?
Basic circuitry of voltage stabilizer?
How do you drive a motor using 8085 microprocessor?
How does a tester work?
How is magnetic field intensity calculated in the vicinity of a current carrying wire?

Important topics in Electrical Engineering

Machines and power systems - make sure that your basics are clear in these, no need to go deep into the subject. Microprocessor, with basic knowledge in latest technologies. Analog design and development methods. Digital circuits. Questions on seminar, industrial training and project.