This document contains frequently asked electrical engineering interview questions and their answers. It discusses system definitions, types of control systems including open loop and closed loop systems, latching current which is the minimum current needed to keep a thyristor switched on, reverse power relays which prevent power flow from the grid to a generator, and knee point voltage which is the saturation point of a current transformer. The document is divided into multiple sections with questions and detailed answers to help electrical engineering graduates prepare for interviews.

1. Part 1: Frequently Asked Electrical
Engineering Interview Questions!
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2.  Just like the interview questions related to the Civil
engineering domain, SayTooLoud would like to share with
you, frequently asked electrical
basic interview questions for the electrical graduates.
 You can go through these questions and answers, while
you practice your interview.
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3. 1. WHAT DO YOU MEAN BY A SYSTEM?
 At the point when various components or elements are
linked in a sequence to perform a particular function, the
gathering of components that all, constitute a System.
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4. 2. ENLIST THE DIFFERENT TYPES OF CONTROL
SYSTEMS?
 Two noteworthy sorts 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 impact
on the Input Quantity. No feedback is available from the
output quantity to the input quantity for correction.
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5.  Closed Loop Control System: The Closed Loop Control
System is one in which the feedback is given from the
Output quantity to the input quantity for the correction in
order to keep up the desired yield of the system.
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6. 3. WHAT DO YOU MEAN BY A LATCHING CURRENT?
 Gate signal is required to be applied to the thyristor to
trigger the thyristor ON within safe mode. At the point
when the thyristor begins carrying the forward current
over the minimum value, termed as Latching current, the
gate signal which is applied in order to trigger the gadget
in never again require to keep the SCR in ON position.
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7. 4. WHAT DO YOU MEAN BY REVERSE POWER
RELAY?
 Reverse Power flow relay is utilized as a part of producing
stations’ security. A generating stations should feed power
to the grid and on the off chance that producing units are
off, there is no production in the plant at that point plant
may consume power from the grid. To prevent the stream
of power from the grid to generator we utilize reverse
power relay.
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8. 5. WHAT IS CALLED AS KNEE POINT VOLTAGE?
 Knee point voltage is noted for electrical Current
transformers and is an important factor to pick a CT. It is
the voltage at which a CT gets saturated.(CT-current
transformer).
 We saw a few questions and answers over here and would
continue with them in the next part in this series. Visit
SayTooLoud for interview tips and questions.
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9. THANK YOU...
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10. THANK YOU...
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