Technical Test SSC JE: Electrical Engineering (EE)- 12


100 Questions MCQ Test Electrical Engineering SSC JE (Technical) | Technical Test SSC JE: Electrical Engineering (EE)- 12


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This mock test of Technical Test SSC JE: Electrical Engineering (EE)- 12 for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 100 Multiple Choice Questions for Electrical Engineering (EE) Technical Test SSC JE: Electrical Engineering (EE)- 12 (mcq) to study with solutions a complete question bank. The solved questions answers in this Technical Test SSC JE: Electrical Engineering (EE)- 12 quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Technical Test SSC JE: Electrical Engineering (EE)- 12 exercise for a better result in the exam. You can find other Technical Test SSC JE: Electrical Engineering (EE)- 12 extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

The ratio of voltage and current in a closed circuit remains

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QUESTION: 2

A permanent magnet retains its magnetism

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QUESTION: 3

Poles of magnet

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QUESTION: 4

Polyphase motors are –

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QUESTION: 5

Moving coil instruments are –

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QUESTION: 6

The dynamometer type wattmeter is used on –

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QUESTION: 7

Megger can be used of testing –

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QUESTION: 8

The most essential instrument required by a T.V. technician is –

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QUESTION: 9

The e.m.f. generated in a d.c. Generator is –

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QUESTION: 10

Rating of transformer is given in –

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QUESTION: 11

In a larger size of alternator, flux is kept –

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QUESTION: 12

A synchronous motor can be started by

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QUESTION: 13

The efficiency of lamp is measured in –

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QUESTION: 14

In metallic arc welding, the supply voltage may be –

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QUESTION: 15

A gas turbine works on

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QUESTION: 16

Photo voltaic solar energy conversion system makes use of

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QUESTION: 17

Solar cells are made of

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QUESTION: 18

A generating station which has a high investment cost and low operating cost is usually operated as a

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QUESTION: 19

Major share of power generated in India is through

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QUESTION: 20

Out of the following plants categories
(i) Nuclear (ii) Run-off-river
(iii) Pump Storage (iv) Diesel
The base load power plants are
 

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QUESTION: 21

Which of the following motors is used in ceiling fan?

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QUESTION: 22

In the optimum generator scheduling different power plants, the minimum fuel cost is obtained when

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QUESTION: 23

The area the load curve represents

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QUESTION: 24

The power system experiences peak demand from

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QUESTION: 25

Demand factor is defined as the ratio of

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QUESTION: 26

A power plant has a maximum demand of 15 MW. The load factor is 50% and the plant factoris 40%. The operating reserve is

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QUESTION: 27

The economics of power plant is greatly influenced by :
1. Load factor 2. utilization factor
3. unit capacity 4. type of load
 

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QUESTION: 28

Domestic consumers are usually charged

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QUESTION: 29

Distributors designed from the point of view of

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QUESTION: 30

What is the main reason for using the high voltage for the long distance power transmission?

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QUESTION: 31

The material used for the manufacture of ground wire is

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QUESTION: 32

Wavy structure of pin insulator increases its

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QUESTION: 33

Corona loss increases with

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QUESTION: 34

Bundled conductors are used to

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QUESTION: 35

In a short transmission line, voltage regulation is zero what the power factor angle of the load at
the receiving end side is equal to

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QUESTION: 36

Ferranti effect happens in transmission line when the line is

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QUESTION: 37

A synchronous compensator absorbs inductive reactive power. It is

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QUESTION: 38

Capacitors are used in power system to

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QUESTION: 39

The dielectric strength of impregnated paper is about

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QUESTION: 40

The distribution system in India are mostly

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QUESTION: 41

As per electricity regulations in India the maximum permissible voltage change at consumer premises should be

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QUESTION: 42

The making capacity of a circuit breaker is

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QUESTION: 43

Which of the following sequences of operations represents the rated operating duty cycle of a circuit breaker ?

(O- open; C-close, t = 3s; T = 3 minutes)

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QUESTION: 44

Purpose of backup protection is

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QUESTION: 45

For ground fault use prefer

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QUESTION: 46

Impulse rations of insulators and lightning arresters  be

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QUESTION: 47

In a transistor, the reverse saturation current ICO.

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QUESTION: 48

The phenomenon known as "Early Effect" in a bipolar transistor refers to a reduction of the effective base-width caused by

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QUESTION: 49

In a common collector amplifier the voltage gain is

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QUESTION: 50

What is the phase shift between the input and output voltage in a common-base small signal amplifier (assuming ideal coupling and by pass capacitors) ?

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QUESTION: 51

When a unit impulse voltage is applied to an inductor of 1 H, the energy supplied by the source is

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QUESTION: 52

For the circuit shown in figure given below, assumeb=hFE = 100. The transistor is in

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QUESTION: 53

In the circuit as shownb = 99, VBE = 0.6 V, then what are the values of VC and IC corresponding to the operating point ?

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QUESTION: 54

Consider a silicon transistor connected as a common emitter amplifier as shown below.The quiescent collector voltage of the circuit is approximately

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QUESTION: 55

In the transistor circuit shown below, the collector-to- ground voltage is + 20 V. The possible condition is

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QUESTION: 56

Generally, the gain of a transistor amplifier falls at high frequencies due to the

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QUESTION: 57

In a JFET drain current is maximum when VGS is

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QUESTION: 58

The iron core in a transformer provides a _______ path to the main flux.

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QUESTION: 59

A transformer transforms

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QUESTION: 60

If the applied voltage to a transfomer primary is increased by keeping the V/f ratio fixex, then the magnetizing current and the core loss will, respectively:

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QUESTION: 61

While performing the open circuit and shortcircuit tests on transformer to determine parameters the status of the low voltage (LV) and high voltage (HV) windings will be such that

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QUESTION: 62

The size of the transformer core depends upon

 

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QUESTION: 63

Grain oriented laminated sheet in transformer reduces

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QUESTION: 64

The colour of fresh dielectric oil used in transformer is

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QUESTION: 65

Distribution transformers have core losses

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QUESTION: 66

In Scott connection, if the turns ratio of main transformer is K, then the teaser transformer has turns ratio of

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QUESTION: 67

A 2V/1V two- winding transformer is connected as an autotransformer. Its voltage regulation as an autotransformer compared to the two-winding transformer is :

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QUESTION: 68

It is advisable to use auto-transformation ratio is

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QUESTION: 69

The black box as shown in the circuit below contains resistors and independent sources. For R = 0 and 2, the value of current 1 is 3 and 1.5 respectively. The value of 1 for R = 1 will be

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QUESTION: 70

For the network shown as below, when 1 = 0, V = 20 V and when R = 0, l = 10 A. if now R =3W, what is the value of the current l?

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QUESTION: 71

In the below shown circuit, if V = 3 volts for E = 1 volt, l = 0; and V = 2 volts for l = 2A and E=0. When E =1 volt and l is replaced by a resistor of 2 ohm, then what is the value of V ?

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QUESTION: 72

The incandescent bulbs rated respectively as p1 and P2 for operation at a specified mains voltage are connected in series across the mains as shown in the above figure. Then the total power supplied by the mains to the two bulbs are

 

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QUESTION: 73

Three parallel branches of resistors are connected across a d.c. source as shown in the figure. Whatis l1 : l2: l3 ?

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QUESTION: 74

The power factor of a power transformer on no load will be aboutn

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QUESTION: 75

Power transformed from primary to secondary depends upon

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QUESTION: 76

An induction motor when started on load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be

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QUESTION: 77

The crawling in the induction motor is caused by

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QUESTION: 78

The voltage actually used for setting up of the useful flux in the air gap of a 3-phase induction motor is

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QUESTION: 79

In induction motor air gap power is 10 kW and mechanically developed power is 8 kW. Wha tare the rotor ohmic losses?

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QUESTION: 80

What is the frequency of rotor current of a 50 Hz induction motor operating at 2% slip

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QUESTION: 81

The supply voltage to an induction motor is reduced by 10%. By what percentage,approximately, will the maximum torque decrease

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QUESTION: 82

An 8-pole single phase induction motor is running at 690 rpm. What is its slip with respect to forward and backward fields, respectively

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QUESTION: 83

A 3-phase squirrel-cage induction motor is started by means of a star/delta switch. What is the starting current of the motor

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QUESTION: 84

What is the operating slip of a 400 V, 50 Hz, 6- pole, 3-phase induction motor, while the speed is 936 rpm with a 400 V, 48 Hz, 3-phase supply

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QUESTION: 85

The power input to a 415 V, 50 Hz, 6 pole 3- phase induction motor running at 975 rpm is 40kW. The stator losses are 1 kW and friction and windage losses total 2 kW. What is the efficiency of motor

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QUESTION: 86

In a 3-phase induction machine, motoring generating and braking operations take place in the range of slip "s" is

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QUESTION: 87

A squirrel cage induction motor having a rated slip of 2% on full load has a starting torque of 50% of full load torque. The starting current is

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QUESTION: 88

What is the correct expression for the electrical power developed by a hydro-electric plant in KW

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QUESTION: 89

What is the approximate efficiency of a normal thermal power station

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QUESTION: 90

What is the nominal pH value of water that is to be maintained in a steam raising thermal powerstation

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QUESTION: 91

A universal motor runs at

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QUESTION: 92

The bus admittance matrix of a power system is given as  

The impedance of line between bus 2 and 3 will be equal to

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QUESTION: 93

At slack bus, which one of the following combinations of variables is specified 

(The symbols have their usual meaning)

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QUESTION: 94

A sample power system network is shown in the figure given below. The reactances marked are in p.u. What is the pu value of Y22 of the Bus Admittance matrix (YBUS)

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QUESTION: 95

The per-unit impedance of a circuit element of 0.15. If the base kV and base MVA are halved then the new value of the per-unit impedance of the circuit element will be

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QUESTION: 96

The per-unit impedance of an alternator corresponding to base values 13.2 kV and 30MVA is 0.2 p.u. The p.u. value of the impedance for base values 13.8 kV and 50 MVA in p.u.will be

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QUESTION: 97

For a given base voltage and base volt-amp, the per unit impedance value of an element is X. What will be the per-unit impedance value of this element when the voltage and volt-amp bases are both doubled

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QUESTION: 98

Rotameter is used for measuring

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QUESTION: 99

What is a differential transformer

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QUESTION: 100

The principle of operation of LVDT is based on variation of

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