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Electrical Engineering Quiz 23

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Electrical Engineering Quiz 23

1 / 50

The power factor of industrial loads is generally______________?

2 / 50

Kirchhoff s current law states that

3 / 50

The load cycle for a motor driving a power press will be________________?

4 / 50

Another name for Zener diode is ______________diode?

5 / 50

To measure a resistance with the help of a potentiometer it is_________________?

6 / 50

The value of the reheat factor is of the order of_____________?

7 / 50

?Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances?. This statement is associated with:

8 / 50

Which of the following statement is true both for a series and a parallel circuit?

9 / 50

In the above question (Q38.) , what is the collector voltage ?

10 / 50

The rate of acceleration on suburban orurban service is in the range_________________?

11 / 50

Choose the incorrect statement: A branch formed by the parallel connection???

12 / 50

A D.C. generator works on the principle of____________?

13 / 50

The overall efficiency of thermal power plant is equal to____________?

14 / 50

If biasing is not done in an amplifier circuit, it results in________________?

15 / 50

Double fourier series analysis of PWM is_____________?

16 / 50

Under harmonic free load voltages, the 3 phase VSI_____________?

17 / 50

_________________method of starting a three phase induction motor needs six terminals ?

18 / 50

Flame proof motors are used in_________________?

19 / 50

Which of the following statements regarding an idel single-phase transformer having a turn ratio of 1 : 2 and drawing a current of 10 A from 200 V A.C. supply is incorrect?

20 / 50

In a mercury arc rectifier, the anode is usually made of_____________?

21 / 50

Carbon electrodes are not used in_______________?

22 / 50

Non inductive resistances are used in decreasing______________?

23 / 50

In a full-wave rectifier using two ideal diodes,Vdc & Vm are the dc & peak values of the voltage respectively across a resistive load. If PIV is the peak inverse voltage of the diode, then the appropriate relationships for this rectifier is____________?

24 / 50

A schrage motor can run on___________?

25 / 50

The size of poxvirus is_______________?

26 / 50

A VTVM is never used to measure ______________?

27 / 50

For bidirectional operation of converters____________?

28 / 50

If mica sheet is placed between the plates of a capacitor the capacity_______________?

29 / 50

Annual instalment towards depreciation reduces as rate of interest increases with______________?

30 / 50

All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?

31 / 50

The wooden poles well impregnated with creosite oil or any preservative compound have life_____________?

32 / 50

If a transistor is operated in such a way that output current flows for 60o of the input signal, then it is ______________ operation?

33 / 50

The first goal to accomplish in analyzing a complex series-parallel circuit is to____________?

34 / 50

An important advantage of a synchronous motor over wound round induction motor is that

35 / 50

The starting torque of a squirrel-cage induction motor is___________?

36 / 50

Thyristor can be protected from over voltages by using

37 / 50

Which of the following capacitors will have the least value of breakdown voltage________ ?

38 / 50

In TV transmission, picture signal is ______________ modulated?

39 / 50

The operating voltage of high voltage cables is up to_______________?

40 / 50

The resistivity of pure germanium under standard conditions is about_______________?

41 / 50

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

42 / 50

In an op-amp differentiator:________________?

43 / 50

When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?

44 / 50

For an ideal op-amp, which of the following is true?

45 / 50

The size of an excavator is usually expressed in terms of_________________?

46 / 50

The units of volume charge density are___________?

47 / 50

Stepless speed control of induction motor is possible by which of the following methods ?

48 / 50

The number 1000 would appear just immediately after__________________?

49 / 50

A step ? down choppers can be used in___________?

50 / 50

For highest power gain, one would use _________________configuration?

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