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Electrical Engineering Quiz 30

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Electrical Engineering Quiz 30

1 / 50

___________ brushes are fragile and cause excessive wear of commutator?

2 / 50

Specific energy consumption is least in ________________ service?

3 / 50

D.C. generators are installed near the load centres to reduce_____________?

4 / 50

________________ frequency is not common in low frequency traction system?

5 / 50

In an AM wave, the majority of the power is in _____________?

6 / 50

____________technique is not applicable to nonlinear system ?

7 / 50

Which of the following property is not necessarily desirable in the material for transformer core ?

8 / 50

A dead storage battery can be revived by___________?

9 / 50

A phase lag lead network introduces in the output_______________?

10 / 50

The complete circle diagram of induetion motor can be drawn with the help of data found from__________?

11 / 50

In a D.C. generator the critical resistance refers to the resistance of_____________?

12 / 50

Which of the following materials is preferred for transmitting electrical energy over long distance ?

13 / 50

Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?

14 / 50

An RL high-pass filter consists of a 470 ? resistor and a 600 mH coil. The output is taken across the coil. The circuit?s critical frequency is___________?

15 / 50

If the field of a D.C. shunt motor gets opened while motor is running______________?

16 / 50

The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by__________?

17 / 50

In a manual shunt motor starter?

18 / 50

Selenium rectifier can be operated at temperatures as high as____________?

19 / 50

A non-linear network does not satisfy__________?

20 / 50

Digital circuit can be made by the repeated use of________________?

21 / 50

Two resistors are said to be connected in series when___________?

22 / 50

In the depletion region of a pn junction, there is a shortage of_________________?

23 / 50

Delta/star transformer works satisfactorily when______________?

24 / 50

No-load on a transformer is carried out to determine______________?

25 / 50

The MOSFET switch in its on-state may be considered equivalent to_____________?

26 / 50

The voltage appearing across the contacts after opening of the circuit breaker is called__________voltage

27 / 50

Which of the following material has least value of dielectric constant ?

28 / 50

In transmission lines the cross-arms are made of________________?

29 / 50

Spacers are provided between adjacent coils?

30 / 50

At series resonance, the phase angle between applied voltage and circuit is______________?

31 / 50

Which of the following insulating materials can withstand the highest temperature safely ?

32 / 50

CC configuration is used for impedance matching because its ________________?

33 / 50

Maximum di / dt in a SCR is________?

34 / 50

Permittivity is expressed in_____________?

35 / 50

For given applied voltage, with the increase in frequency of the applied voltage?

36 / 50

Battery charging equipment is generally installed______________?

37 / 50

The internal resistance of an alkali cell is nearly _________ times that of the lead-acid cell

38 / 50

The stator of a D.C. machine comprises of_____________?

39 / 50

How many op-amps are required to implement this equationop-amps?

40 / 50

The running winding of a single phase motor on testing with meggar is found to be ground. Most probable location of the ground will be___________?

41 / 50

_______________watt-hours per tonne km is usually the specific energy consumption for suburban services?

42 / 50

In current commutated DC-DC choppers, the voltage spike appears across the load when_____________?

43 / 50

Which of the following statements pertains to resistors only _____________?

44 / 50

Dynamic equalizing circuit is used for________________?

45 / 50

In the cables, sheaths are used to___________?

46 / 50

A zener diode is destroyed if it______________?

47 / 50

Which is the best conductor of electricity _______________?

48 / 50

The gate of a JFET is ___________ biased?

49 / 50

Petroleum jelly is applied to the electrical connections to the lead-acid battery___________?

50 / 50

The electric lines of force are____________?

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