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Electrical Engineering Quiz 34

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Electrical Engineering Quiz 34

1 / 50

The rotor developed by a single-phase motor at starting is___________?

2 / 50

In class A operation, the input circuit of a JFET is ____________ biased?

3 / 50

Magnetising steel is normals difficult because____________?

4 / 50

The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it_____________?

5 / 50

The advantage of cables over overhead transmission lines is___________?

6 / 50

The number of electrons in one coulomb charge is equal to_______________?

7 / 50

The pinch-off voltage of a JFET is about _______________?

8 / 50

The wattage of motor for driving domestic sewing machine will be around__________?

9 / 50

The most accurate device for measuring voltage is ____________?

10 / 50

For measuring current at high frequency we should use_______________?

11 / 50

Constantan contains_______________?

12 / 50

The crystal oscillator frequency is very stable due to___________of the crystal?

13 / 50

Radiations from a black body are proportional to____________?

14 / 50

In thermocouples which of the following pairs is commonly used ?

15 / 50

The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity. The statement is associated with____________?

16 / 50

Under which of the following conditions hunting of synchronous motor is likely to occur?

17 / 50

A 3-phase 4 wire system is commonly used on________________?

18 / 50

In deriving ac equivalent circuit for an amplifier circuit, we short circuit___________?

19 / 50

Which of the following is true about SIT?

20 / 50

In the above question, what are the values of cut-off frequencies?

21 / 50

If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is_____________?

22 / 50

In a FET, there are _____________pn junctions at the sides?

23 / 50

Compounding of steam turbine is done for_______________?

24 / 50

A universal motor can run on___________?

25 / 50

If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ?

26 / 50

Weston standard cell at 20?C has voltage of _______ volts

27 / 50

While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerating torque is produced by_____________?

28 / 50

In a Weston frequency meter, the magnetic axes of the two fixed coils are__________________?

29 / 50

The average value of the output voltage in a step ? down dc chopper is given by__________?

30 / 50

Current cannot flow to ground through _______________?

31 / 50

In a certain low-pass filter, fc = 3.5 kHz. If the input voltage is a 6 V sine wave with a dc level of 10 V, what is the output voltage magnitude?

32 / 50

In an interconnected system, the diversity factor of the whole system:

33 / 50

Large capacity generators are invariably___________?

34 / 50

Primary winding of a transformer________________?

35 / 50

The NOR gate is OR gate followed by____________________?

36 / 50

Which of the following is usually not the generating voltage__________?

37 / 50

Lubricant used for ball bearing is usually___________?

38 / 50

In a JFET, when drain voltage is equal to pinch-off voltage, the depletion layers ______________?

39 / 50

Which of the following materials is used for overhead transmission lines ?

40 / 50

A 470 ? resistor, a 220 ? resistor, and a 100 ? resistor are all in parallel. The total resistance is approximately________________?

41 / 50

The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a _________________?

42 / 50

Which of the following are the applications of D.C. system ?

43 / 50

In a tansistor, IC = 100 mA and IE = 100.2 m The value of ? is____________?

44 / 50

___________ is most commonly used for making magnetic recording tape?

45 / 50

The armature voltage control of D.C. motor provides_____________?

46 / 50

The resistivity of a metal is a function of temperature because_____________?

47 / 50

The resistance of a conductor varies inversely as___________?

48 / 50

A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is___________?

49 / 50

The power is measured in terms of decibles in case of_________?

50 / 50

An SCR can exercise control over____________of a.c. supply?

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