Home » Electrical Engineering Quiz » Electrical Engineering Quiz 57

Electrical Engineering Quiz 57

0%
0

Electrical Engineering Quiz 57

1 / 50

An ideal switch is___________?

2 / 50

A common method of cooling a power transformer is_______________?

3 / 50

A NAND gate is called a universal logic element because______________?

4 / 50

The thermal efficiency of the engine with condenser as compared to without condenser, for a given pressure and temperature of steam, is_____________?

5 / 50

The best frequency response is of_____________coupling?

6 / 50

The pinch-off voltage in a JFET is analogous to _____________ voltage in a vacuum tube?

7 / 50

A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be________________?

8 / 50

Interpole flux should be sufficient to_____________?

9 / 50

In a D.C. generator the ripples in the direct e.m.f. generated are reduced by_____________?

10 / 50

By which of the following a bus-bar is rated?

11 / 50

Which of the following motors one will choose to drive the rotary compressor ?

12 / 50

The efficiency of an induction motor can be expected to be nearly____________?

13 / 50

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?

14 / 50

A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because?

15 / 50

On which of the following factors the number of phases for which a rectifier should be designed depend ?

16 / 50

The operating voltage of extra high tension cables is upto_______________?

17 / 50

A thermal protection switch can protect against_____________?

18 / 50

A transmission line is protected by_____________?

19 / 50

The effect of increasing the load on a synchronous motor running with normal excitation is to___________?

20 / 50

The time constant of a series R-C circuit is given by____________?

21 / 50

Torque developed by a single phase induction motor at starting is_____________?

22 / 50

The capacity of large turbo-generators varies from___________?

23 / 50

Number of tappings for each equalizer ring is equal to_____________?

24 / 50

Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is___________?

25 / 50

Permeance is the reciprocal of______________?

26 / 50

The circle diagram for an induction motor cannot be used to determine____________?

27 / 50

Which of the following test can be performed on DC series motor?

28 / 50

Which of the following materials has a negative temperature co-efficient of resistance?

29 / 50

The no load current in a transformer lags behind the applied voltage by an angle of about_____________?

30 / 50

Of the values listed, the most realistic value for open-loop voltage gain of an OP-amp is________________?

31 / 50

4 thyristors rated 200 V in series. The operating voltage of the string is 600 V. Derating factor of the string is_____________________?

32 / 50

Time constant of an inductive circuit___________?

33 / 50

In two part tariff, variation in load factor will affect____________?

34 / 50

D.C. windings are____________?

35 / 50

Commercial power supplies have voltage regulation ______________?

36 / 50

Efficiency of a power transformer is of the order of________________?

37 / 50

Each cell has a vent cap________?

38 / 50

Operating torques in analogue instruments are_______________?

39 / 50

For V-curves for a synchronous motor the graph is drawn between:_______________?

40 / 50

A JFET is a__________ driven device?

41 / 50

The purpose of d.c. conditions in a transistor is to___________________?

42 / 50

The main factor which leads to unstable parallel operation of flat and over compounded generators is_____________?

43 / 50

If residual magnetism is present in a D.C. generator, the induced e.m.f. at zero speed will be____________?

44 / 50

A steam power stations basically work on the______________?

45 / 50

In over compounded generator, full load terminal voltage is______________?

46 / 50

The pointer of an indicating instrument should be______________?

47 / 50

If an instrument has cramped scale for larger values, then it follows________________?

48 / 50

Which of the following generating machine will offer constant voltage on all loads?

49 / 50

For the same H.P. rating and full load speed, following motor has poor starting torque_____________?

50 / 50

Charging of sulfated battery produces _________ heat

Provide Your Information

Your score is

The average score is 0%

0%

Share on facebook
Facebook
Share on twitter
Twitter
Share on whatsapp
WhatsApp
Electrical Engineering Quiz 1
Electrical Engineering Quiz 2
Electrical Engineering Quiz 3
Electrical Engineering Quiz 4
Electrical Engineering Quiz 5
Electrical Engineering Quiz 6
Electrical Engineering Quiz 7
Electrical Engineering Quiz 8
Electrical Engineering Quiz 9
Electrical Engineering Quiz 10

Help Concept 360 Please. We need 500 Youtube Subscriber. Please Subscribe our Youtube Channel. Click below link to subscribe Please

آپ سے گزارش ہے کہ ہمارے یوٹیوب چینل کوسبسکرائب کر کے ہماری مدد کریں جیسا کہ یہ ویب سائٹ آپکی مدد کر رہی ہے۔ شکریہ