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Electrical Engineering Quiz 55

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Electrical Engineering Quiz 55

1 / 50

For a frequency of 200 Hz, the time period will be__________?

2 / 50

Which of the following load normally needs starting torque more than the rated torque?

3 / 50

The bandwidth of an RF tuned amplifier is dependent on____________?

4 / 50

Which of the following is the poorest conductor of electricity ?

5 / 50

The gain of an amplifier with feedback is known as____________gain?

6 / 50

The charge required to liberate one gram equivalent of any substance is known as _________ constant

7 / 50

Which of the following variety of copper has the best conductivity ?

8 / 50

5 H.P., 50-Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest ?

9 / 50

The phase difference between the input and output voltages in a common base arrangement is___________?

10 / 50

The path of the magnetic flux in transformer should have____________?

11 / 50

For 275 kV transformers, using cold rolled grain oriented steel, which of the following values of flux density may be used?

12 / 50

A Zener voltage regulator is used for ____________ load currents?

13 / 50

The collector of a transistor is____________doped?

14 / 50

What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

15 / 50

In an open loop control system____________?

16 / 50

Carbon bearings are used under which of the following conditions ?

17 / 50

For making a capacitor, it is better to select a dielectric having___________?

18 / 50

The IGBT resulted in higher switching speed and lower energy losses. It can be used for___________?

19 / 50

is used for heating non-conducting materials?

20 / 50

In _________ fuel transportation cost is least.

21 / 50

Which of the following losses are significantly reduced by laminating the core of a D.C. generator ?

22 / 50

Class AB operation is often used in power large signal amplifiers in order to_________?

23 / 50

For a particular material the Hall coefficient was found to be zero. The material is______________?

24 / 50

The control element of an SCR is ______________?

25 / 50

What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200 ?

26 / 50

The surge phenomenon is particularly important in case of_______________?

27 / 50

Power transformers are designed to have maximum efficiency at___________?

28 / 50

Hydrogen has a heat transfer co-efficient __________ times that of air?

29 / 50

The capacitor preferred for high frequency circuits is_____________?

30 / 50

Which of the following statements regarding two value capacitor motor is incorrect ?

31 / 50

Which generator would you prefer for feeding long D.C. transmission lines ?

32 / 50

Voltage dependent resistors are usually made from________________?

33 / 50

The ignited or auxiliary anode in mercury arc rectifier is made of____________?

34 / 50

The collector-base junction in a transistor has___________?

35 / 50

Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?

36 / 50

The phase difference between voltage and current wave through a circuit element is given as 30?. The essential condition is that

37 / 50

The presence of ozone due to corona is harmful because it________________?

38 / 50

In which of the following equipment direct current is needed ?

39 / 50

The transfer function technique is considered as inadequate under which of the following conditions ?

40 / 50

The condition for the validity under Ohm?s law is that_______________?

41 / 50

The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation?

42 / 50

In the above question, what is the power in sidebands?

43 / 50

Which of the following devices has the highest input impedance ?

44 / 50

One would find a clamping circuit in ___________________?

45 / 50

The minority carrier concentration is largely a function of_____________?

46 / 50

Which of the following is likely to have the largest resistance ?

47 / 50

In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as______________?

48 / 50

For open control system which of the following statements is incorrect ?

49 / 50

Which of the following statements regarding repulsion-start induction motor is incorrect ?

50 / 50

SCR will be turned off when anode current is_______________?

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