TasDia Network
TasDia Network

MCQs 1: The torque produced in induction type relay (shaded pole structure) is_____________?

inversely proportional to the current inversely proportional to the square of the current proportional to the current proportional to square of the current
Answer Explanation

MCQs 2: Admittance relay is __________ relay?

impedance directional non-directional none of the above
Answer Explanation

MCQs 3: Air blast circuit breakers for 400 kV power system are designed to operate in_______________?

100 microsecond 50 millisecond 0.5 sec 0.1 sec
Answer Explanation

MCQs 4: The fuse wire, in D.C. circuits, is inserted in____________?

negative circuit only positive circuit only both (A) and (B) either (A) or (B)
Answer Explanation

MCQs 5: A fuse is never inserted in____________?

neutral wire negative of D.C. circuit positive of D.C. circuit phase dine
Answer Explanation

MCQs 6: A switchgear is device used for_____________?

interrupting an electrical circuit switching an electrical circuit 111. switching and controlling an electrical circuit switching, controlling and protecting the electrical circuit and equipment
Answer Explanation

MCQs 7: The information to the circuit breaker under fault conditions is provided by____________?

relay rewirable fuse H.R.C. only all of the above
Answer Explanation

MCQs 8: By which of the following methods major portion of the heat generated in a H.R.C. fuse is dissipated ?

Radiation Convection Conduction All of the above
Answer Explanation

MCQs 9: A balanced 3-phase system consists of_______________?

zero sequence currents only positive sequence currents only negative and zero sequence currents zero, negative and positive sequence currents
Answer Explanation

MCQs 10: A short-circuit is identified by_____________?

no current flow heavy current flow voltage drop voltage rise
Answer Explanation

MCQs 11: To limit short-circuit current in a power system are used______________?

earth wires isolators H.R.C. fuses reactors
Answer Explanation

MCQs 12: In a single bus-bar system there will be complete shut down when____________?

fault occurs on the bus itself fault occurs on neutral line two or more faults occur simultaneously fault occurs with respect to earthing
Answer Explanation

MCQs 13: Overfluxing protection is recommended for_____________?

distribution transformer generator transformer of the power plant auto-transformer of the power plant station transformer of the power plant
Answer Explanation

MCQs 14: If the fault occurs near the impedance relay, the VII ratio will be____________?

constant for all distances lower than that of if fault occurs away from the relay higher than that of if fault occurs away from the relay none of the above
Answer Explanation

MCQs 15: The inductive interference between power and communication line can be minimized by__________?

transposition of the power line transposition of the communication line both (A) and (B) increasing the distance between the conductors
Answer Explanation

MCQs 16: transmission line has reflection coefficient as one?

Open circuit Short-circuit Long None of the above
Answer Explanation

MCQs 17: The relay with inverse time characteristic will operate within____________?

1.5 sec 5 to 10 sec 5 to 20 sec 20 to 30 sec none of the above
Answer Explanation

MCQs 18: Which of the following devices will receive voltage surge first travelling on the transmission line ?

Lightning arresters Relays Step-down transformer Switchgear
Answer Explanation

MCQs 19: A _________ is used to measure the stator % winding temperature of the generator?

thermocouple pyrometer resistance thermometer thermometer
Answer Explanation

MCQs 20: Distance relays are generally_____________?

split-phase relays reactance relays impedance relays none of the above
Answer Explanation

Related Topics

About Us | Contact Us | Privacy Policy
ABOUT US
Category
Who We Are

TasDia Network, this platform not only provides you the best educational stuff but besides this, we are creating thousands of new ideas to making your signature and planning much more on a single platform.

© 2020-2023, TasDia Network

All rights of the publication are reserved by tasdia.com.