The direction of motion of the conductor, according to Fleming's right and rule is indicated by — Electrical Engineering MCQ

D. both fore finger and middle finger

Which of the following losses is together called iron losses? — Electrical Engineering MCQ

A. Eddy current loss and hysteresis loss

B. Eddy current loss and frictional loss

C. Hysteresis loss and copper loss

D. Hysteresis loss and frictional loss

Therefore, the active power consumed is zero. The circuit only consumes and returns reactive power. 15. The primary and secondary windings of an Auto transformer are : — Electrical Engineering MCQ

C. Both magnetically and electrically coupled

In repulsion motor direction of rotation of motor — Electrical Engineering MCQ

B. is the same as that of brush shift

A. is opposite to that of brush shift

C. is independent of brush shift

If the capacitor of a single-phase motor is short-circuited — Electrical Engineering MCQ

C. the motor will run in reverse direction

D. the motor will run in the same direction at reduced r.p.m.

For the transmission of same power — Electrical Engineering MCQ

B. AC line requires more copper than a DC line

A. DC line requires more copper than an AC line

C. Both AC as well as DC line need same copper

The phenomenon of Corona in overhead transmission lines is accompanied by: — Electrical Engineering MCQ

C. Power loss and radio interference

The transfer function of a system is defined as the ratio of Laplace transform of output to Laplace transform of input assuming: — Electrical Engineering MCQ

B. Initial conditions are infinite

C. Initial conditions are equal to 1

If the synchronous motor, properly synchronized to the supply is running on no load and is having negligible loss then — Electrical Engineering MCQ

B. the stator current will be zero

A. the stator current will be very small

C. the stator current will be very high

D. the back e.m.f. will be more than the supply voltage

The function of the choke coil in a standard fluorescent tube light circuit is to: — Electrical Engineering MCQ

A. Provide a high starting voltage kick and limit the running current

B. Improve the power factor of the circuit

C. Eliminate radio interference

D. Convert AC supply to DC supply

Which of the following materials when used as the viewing surface of a CRO gives a bluish glow? — Electrical Engineering MCQ

B. Zinc Sulfide with silver as impurity

A. Zinc Sulfide with copper as impurity

A single phase Hysteresis motor — Electrical Engineering MCQ

A. Can run at synchronous speed only

B. can run at sub synchronous speed only

C. can run at synchronous and super synchronous speed

D. can run at synchronous and sub synchronous speed

In a thyristor (SCR), the holding current is: — Electrical Engineering MCQ

B. Less than the latching current

A. Greater than the latching current

C. Equal to the latching current

D. Unrelated to latching current

In a Field Effect Transistor (FET), the Pinch-off voltage refers to the gate-to-source voltage at which the: — Electrical Engineering MCQ

A. Gate current becomes infinite

D. Drain current reaches its maximum saturated value

Which of the following can be measured by conducting insulation resistance test on a synchronous motor? — Electrical Engineering MCQ

A. Phase to phase winding resistance

B. Rotor winding to earthed shaft

C. Stator winding to earthed frame

A transmission line consists of which of the following distributed constants? — Electrical Engineering MCQ

D. Resistance, inductance, series and shunt capacitance

B. Inductance and shunt capacitance

C. Resistance and series capacitance

The principle of operation of a 3–phase induction motor is most similar to that of : — Electrical Engineering MCQ

D. transformer with a shorted secondary

B. capacitor–start induction run motor

C. repulsion–start induction motor

Top Electrical Engg MCQ - 500+ MCQ

421

What will be the mutual inductance (in mH) between the two coils, if a current of 2 sin(100πt) passes through one of the coil, which induces a maximum EMF of 10π V in the second coil?

422

Which of the following measuring instrument has least value of internal resistance?

423

Which of the following statements regarding hysteresis motor is incorrect?

Showing 421 – 423 of 423 MCQ Questions | Page 22 of 22

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