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STED COUNCIL ELECTRICAL

QA\QC 2022 SCHEME  

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STED COUNCIL (QA/QC)

Online Exam

1 / 50

For which motors DOL starter can be used

2 / 50

Power factor of the following circuit will be unity

3 / 50

3-point starter is used to start the

4 / 50

In a cable immediately above, metallic sheath _______ is provided

5 / 50

Which type of wiring system is suitable for multistorey building

6 / 50

Permissible current density of GI

7 / 50

The frequency of domestic power supply in India is

8 / 50

Which of the following circuit element stores energy in the electromagnetic field

9 / 50

The operating voltage of high-tension cables is up to

10 / 50

A fuse is connected

11 / 50

Breaking capacity of a circuit breaker is usually expressed in terms of

12 / 50

The fuse rating is expressed in terms of

13 / 50

The voltage of the single-phase supply to residential consumer is

14 / 50

The field coils of D.C generator are made of

15 / 50

The insulating material of a cable should have

16 / 50

Starters are used with D.C motors because

17 / 50

The medium employed for extinction of arc in air circuit breaker is

18 / 50

Form factor for a sine wave is

19 / 50

Relation between phase voltage and line voltage in three phase delta connected system

20 / 50

The operating voltage of extra high-tension cables is up to

21 / 50

Which of the following does not change in an ordinary transformer

22 / 50

For 66Kv lines the number of insulator disc are used

23 / 50

Fuse protection is used for current ratings up to

24 / 50

Overhead system can be designed for operation up to

25 / 50

Differential relays use the principle of

26 / 50

Transformer ratings are given in

27 / 50

H.R.C fuses provide best protection against

28 / 50

How much current is produced by a voltage of 18kV across a 15-kilo ohm resistance?

29 / 50

The material commonly used for sheath of underground cables is

30 / 50

Moisture content in the soil _______ earth soil resistance

31 / 50

A 3-phase 4-wire system is commonly used on

32 / 50

The speed of a synchronous motor

33 / 50

Sulphur hexafluoride is a

34 / 50

The algebraic sum of voltages around any closed path in a network is equal to

35 / 50

What is the standard size of GI earth wire in domestic installation

36 / 50

The filament of electric bulb is made of

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In an induction motor, rotor slots are usually not quite parallel to the shaft but are given a slight skew

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In which of the following motors the stator and rotor magnetic field rotate at the same speed

39 / 50

Capacitors for power factor correction are rated in

40 / 50

Laminated core in electrical machines are used to reduce

41 / 50

A series motor is best suited for driving

42 / 50

The primary winding of a transformer has a 120V ac supply. What is the value of secondary voltage if the turns ratio is 10

43 / 50

Pin type insulators are not used for voltages beyond

44 / 50

What will happen if DC motor is used without starter

45 / 50

Factors on which soil resistance depends

46 / 50

Transmission line insulators are made of

47 / 50

The chemical used in breather for transformer should have the quality of

48 / 50

The conductors of the overhead lines are

49 / 50

Distribution lines in India generally use

50 / 50

What is the insulation breakdown voltage of a cable

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