Electrical Engineering Quiz 33

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Electrical Engineering Quiz 33

1 / 50

In EMC signal, the source delivers maximum power to the input of transmission line when the transmission line input impedance

2 / 50

It is required to measure the true open circuit e.m.f. of a battery. The best device is_____________?

3 / 50

The spacing between phase conductors of a 220 kV line is approximately equal to________________?

4 / 50

Weber is the unit of_____________?

5 / 50

Which of the following is a semiconductor material ?

6 / 50

The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to__________?

7 / 50

In transformers using hot rolled steel, the cross-section of the yoke is made about __________ greater than that of the core?

8 / 50

Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is__________?

9 / 50

The number of Boolean functions that can be generated by n variables is equal to_________________?

10 / 50

Which of the following high resistance materials has the highest operating temperature ?

11 / 50

Internal resistance of a cell is due to___________?

12 / 50

With a motor converter it is possible to obtain D.C. voltage only upto__________?

13 / 50

A capacitor consists of_____________?

14 / 50

By which of the following systems electric power may be transmitted ?

15 / 50

Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to_____________?

16 / 50

If the efficiency of a machine is to be high, what should be low __________?

17 / 50

Ohm?s law is not applicable to__________?

18 / 50

Which one of the following functions like a motor ?

19 / 50

The structure sensitive property of a super conductor is______________?

20 / 50

The plugging gives the____________?

21 / 50

The use of strain type insulators is made where the conductors are__________?

22 / 50

Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds?

23 / 50

The resistance encountered by a train in motion is on account of_________________?

24 / 50

In a parallel LC circuit, if the signal frequency is decreased below the resonant frequency, then________________?

25 / 50

For frequencies below the resonant frequency , a parallel LC circuit behaves as a ______________load?

26 / 50

For an EHV equipment for maintenance first it should be isolated and connected to ground because_____________?

27 / 50

In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency_____________?

28 / 50

The draught produced, for a given height of the chimney and given mean temperature of chimney gases_______________?

29 / 50

The specific gravity of electrolyte is measured by____________?

30 / 50

In the D.C. motor the iron losses occur in____________?

31 / 50

Which of the following motors is most suitable for signalling devices and many kinds of timers ?

32 / 50

An oscillator employs___________feedback?

33 / 50

Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits ?

34 / 50

The sparking between two electrical contacts can be reduced by inserting a___________?

35 / 50

Thermal runaway is not possible in FET because as the temperature of FET increases_________________?

36 / 50

When a rectifier is loaded which of the following voltage drops take place ?

37 / 50

A dielectric material must be____________?

38 / 50

. In a synchronous motor which loss varies with load ?

39 / 50

The h parameter approach gives correct results for_______________?

40 / 50

A class A power amplifier is sometimes called______________amplifier?

41 / 50

In a differentially compounded D.C. motor, if shunt field suddenly opens____________?

42 / 50

__________ is a hard solder?

43 / 50

Open circuit test on transformers is conducted to determine____________?

44 / 50

The currents into a junction flow along two paths. One current is 4 A and the other is 3 The total current out of the junction is_____________?

45 / 50

Materials used in heat sink should have_____________?

46 / 50

Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a___________?

47 / 50

Which of the following is an open loop control system ?

48 / 50

The shaft of an induction motor is made of_____________?

49 / 50

The two pressure coils of a single phase power factor meter have_________________?

50 / 50

Which of the following metals is generally manufactured by electrolysis process ?

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