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Electrical Engineering Interview Question and Answer PDF
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Top 15 Electrical Engineering Interview Question and Answer PDF
1. State the advantages of speed control using thyristor?
Ans:
1. Features involving rapid switching than Mosfet, BJT etc.
2. Low price
3. Esteemed accuracy attained
2. Define ACSR cable and where we use it?
Ans: ACSR stands for- Aluminium Conductor Steel Reenforced which is utilised in transmission and distribution.
3. Enumerate the different kind of cables used for transmission?
Ans: Cables, which are used for transmitting power, can be categorized in three forms:
• Low-tension cables, .
• High-tension cables
• Super tension cables
4. The value of Back emf is used for DC motor
Ans: The value of back emf is zero.
5. State the benefits of VSCF wind electrical system?
Ans: Benefits of VSCF wind electrical system are:
• Simple pitch changing mechanism is needed.
• Aero turbine only operates at maximum efficiency point.
• Additional energy in the high wind speed region of the speed – duration curve is extracted
• The small reduction in aerodynamic stresses.
6.Why do you need to choose Electrical Engineering Ohm’s Law?
Ans: In this section, you can learn and practice Electrical
Engineering Questions based on "Ohm's Law" and improve your skills in order to face the interview.
8. Discuss RLC circuit?
Ans: An RLC circuit transfers an electrical circuit consisting of a resistor (R) and inductor (L) and a capacitor (C), connected in parallel or series. This typical circuit is termed as a second order circuit as any voltage or current flowing in the circuit can be described by a second-order differential equation.
9. Explain the term Capacitance and Inductance?
Ans: Capacitance: It is the amount of charge stored in side a the capacitor at a certain voltage.
Inductance: It is termed as the property of a coil to resist any changes in electric current passing through it. Mutual inductance occurs when a secondary coil resists current change in the primary coil.
10. What takes place when two positively charged material is placed together?
Ans: It is when two positively charged material place together it will repel.
11.Explain electron in the outer orbit?
Ans: Electron in the outer orbit is called valence.
12.Define System?
Ans: When a number of elements or components are interconnected in a sequence to perform a certain function, the
group of elements that all constitute a System.
13. Explain Control System?
Ans: Control System is a set of mechanical or electrical device and it is computerized.It manages,commands,directs or regulates the behaviour of other devices or systems using control loops.It can range from a single home heating controller using a thermostat controlling a domestic boiler.
14. State the different types of Control Systems?
Ans: Two major types of Control Systems are 1) Open loop Control System 2) Closed Loop Control Systems
Open loop Control Systems:The Open loop Control System is one in which the Output Quantity has no effect on the Input Quantity. No feedback is present from the output quantity to the input quantity for correction.
Closed Loop Control System:The Closed loop Control System is one in which the feedback is provided from the Output quantity to the input quantity for the correction so as to maintain the desired output of the system.
15. Define the term Latching current?
Ans: Gate signal is to be applied to the thyristor to trigger the thyristor ON in safe mode in no longer require to keep the scr in ON position.
16.Discuss reverse power relay?
Ans: It is used in installations where generator runs in parallel with the utility or another generator, directional power relay to monitor power from a generator running parallely with another generator or utility.The main function is to prevent reverse power condition when power flows from bus bar into the generator.
Electrical Engineering Interview Question and Answer PDF For Freshers
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