Electrical Engineering Quiz 36

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Electrical Engineering Quiz 36

1 / 50

For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?

2 / 50

A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance _______?

3 / 50

In closed loop control system, with positive value of feedback gain the overall gain of the system will______________?

4 / 50

Which of the following statement is true________________?

5 / 50

Static error coefficients are used as a measure of the effectiveness of closed loop systems for specified ___________ input signal?

6 / 50

The function of snubber circuit connected across the SCR is to___________?

7 / 50

Specific energy consumption becomes________________?

8 / 50

In a series?parallel circuit, individual component power dissipation are calculated using_____________?

9 / 50

Main traction systems used in India are, those using______________?

10 / 50

The rotor of a hysteresis motor is made of___________?

11 / 50

Less maintenance troubles are experienced in case of___________?

12 / 50

In a superconductor the value of critical density depends upon______________?

13 / 50

When the dielectric is homogeneous,the potential gradient is_____________?

14 / 50

The current flow through electrolyte is due to the movement of____________?

15 / 50

Locked rotor current of a shaded pole motor is____________?

16 / 50

When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?

17 / 50

A second condition for oscillations is____________?

18 / 50

In a phase shift oscillator, we use____________RC sections?

19 / 50

Any externally introduced signal affecting the controlled output is called a______________?

20 / 50

Surface resistance of an insulating material is reduced due to the______________?

21 / 50

In a split phase motor, the running winding should have?

22 / 50

In a surface condenser if air is removed, there is___________?

23 / 50

An SCR is made of silicon and not germanium because silicon _________________?

24 / 50

Magnetic moment is a_____________?

25 / 50

The main objective of static power converters is to____________?

26 / 50

In which single-phase motor, the rotor has no teeth or winding ?

27 / 50

The number of slip rings on a squirrel cage induction motor is usually____________?

28 / 50

A relay is superior to a mechanical switch because it _______________?

29 / 50

In jet type condensers___________?

30 / 50

Which type of bearing is provided in small induction motors to support the rotor shaft ?

31 / 50

In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will__________?

32 / 50

A certain Wheatstone bridge has the following resistor values: R1 = 10 k?, R2 = 720 ?, and R4 = 2.4 k?. The unknown resistance is_____________?

33 / 50

When the temperature changes, the operating point is shifted due to _______________?

34 / 50

Which of the following motors has series characteristics ?

35 / 50

Superconductivity is observed for____________?

36 / 50

For a buck converter to reduce the conduction losses in diode

37 / 50

Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles?

38 / 50

In series resonance, there is__________________?

39 / 50

The torque developed in the cage induction motor with autostarter is___________?

40 / 50

Secondary air is the air used to______________?

41 / 50

On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?

42 / 50

During the charging and discharging of a nickel-iron cell____________?

43 / 50

Which of the following statement about D.C. generators is false ?

44 / 50

Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as________materials

45 / 50

The output stage of a multistage amplifier usually employs______________?

46 / 50

Poor power factor________?

47 / 50

____________is a fixed frequency oscillator?

48 / 50

Which of the following is not a method for estimating depreciation charges?

49 / 50

A feedback circuit usually employs _________________ network?

50 / 50

Flashing the field of D.C. generator means:______________?

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