SSC JE 11 Oct 2023 PAPER I Electrical Part 6

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.26 The total inductance of two coupled coils in the ‘series aiding’ and ‘series opposing’ connections are 4 H and 2 H, respectively. The value of mutual inductance will be _________.

1. 0.33 H
2. 0.5 H
3. 0.2 H
4. 0.75 H

Correct Option: 2

Q.27 Which of the following statements is true regarding the voltage drop due to armature reaction for leading power factors in an alternator?

1. The voltage drop is not affected by the power factor.
2. The voltage drop increases with an increase in power factor.
3. The voltage drop decreases with an increase in power factor.
4. The voltage drop remains constant irrespective of the power factor.

Correct Option: 3

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.28 In applications such as drink and food mixers and sewing machines _________ is used.

1. split-phase IM motor
2. AC series motor
3. repulsion motor
4. universal motor

Correct Option: 4

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.29 Which of the following is NOT a desirable criteria for an underground cable?

1. Mechanical protection is not required in any underground cable
2. Proper insulation thickness should be taken care of in order to provide greater degree of safety
3. Conductors should be used such that heating loss is minimum
4. Conductors used in the cable should be stranded

Correct Option: 1

Q.30 In case of electrical energy, the joule is also expressed as the _____.

1. newton-second
2. meter-second
3. joule-second
4. watt-second

Correct Option: 4

Q.31 In electrical applications, the coil of an infrared lamp is made up of ________.

1. nichrome
2. tungsten
3. copper
4. iron

Correct Option: 2

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.32 In case of electromagnetic induction, two coils are arranged in such a way that a change in one coil causes an EMF to be induced in the other coil. This is called _____.

1. mutual inductance
2. series inductance
3. parallel inductance
4. self-inductance

Correct Option: 1

Q.33 The capacitance of a parallel plate capacitor having two plates of area A = 200 cm2 and separated by distance d = 10 cm is given by ____________ if the permittivity of medium is 8.854 × 10-12 F/m

1. 17.7 × 10-7 µF
2. 17.7 µF
3. 17.7 F
4. 17.7 PF

Correct Option: 1

Q.35 A voltage source having some internal resistance delivers a 2A current when a 5Ω load is connected to it. When the load is 10Ω, then the current becomes 1.6A. Calculate the power transfer efficiency of the source for a 15Ω load.

1. 10%
2. 50%
3. 100%
4. 90%

Correct Option: 2

Q.36 Which of the following motors is used for shears and presses?

1. DC series motor
2. Stepper motor
3. DC shunt motor
4. DC compound motor

Correct Option: 4

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.37 A 3-phase star-connected alternator is rated at 1.3 MVA, 11 KV. The armature effective resistance and synchronous reactance are 1.3 Ω and 20 Ω, respectively. Calculate voltage drop due to synchronous reactance.

1. 1364.6 V
2. 930.77 V
3. 842.24 V
4. 2363 V

Correct Option: 1

Q.38 The shaded-pole induction motors are of ___________.

1. high cost
2. low cost
3. zero cost
4. very high cost

Correct Option: 2

Q.39 The most important consideration when making a detailed estimate is:

1. Only availability of materials
2. Only transportation of materials
3. quantity, transportation and availability of materials
4. Only quantity of the materials

Correct Option: 3

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.40 Which of the following lamps are used in searchlights?

1. Fluorescent lamps
2. Neon lamps
3. Sodium vapour lamp
4. Arc lamps

Correct Option: 4

Q.41 An electric kettle consumes 10kw of electric power when operated at 200 V. A fuse wire of what rating must be used for it?

1. 30A
2. 40A
3. 10A
4. 50A

Correct Option: 4

Q.42 FET is like a switched on condition when it operates in ______ mode.

1. cut off
2. saturation
3. ohmic
4. inversion

Correct Option: 2

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.43 Which of the following parts is NOT present in a typical brushless DC motor?

1. Commutator
2. Permanent magnet
3. Electronic controller
4. Fixed armature

Correct Option: 1

Q.44 To measure the frequency of a waveform, which of the following data is necessary from the CRO?

1. Peak to peak value of the waveform
2. Vertical scale setting
3. Amplitude of the waveform
4. Time period of the waveform

Correct Option: 4

Q.45 The ratio of the area under the load curve to the total area under the rectangle in which it is contained gives the value of ________.

1. load factor
2. average demand
3. diversity factor
4. utilisation factor

Correct Option: 1

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.46 In a phasing out test, a voltmeter connected to the winding shows deflection when the supply is given; this indicates that this is _______________.

1. secondary winding only
2. both primary and secondary winding
3. tertiary winding only
4. primary winding only

Correct Option: 1

Q.48 A repulsion start induction run single phase motor runs as an IM only when ________.

1. short circuit is disconnected
2. brushes are shifted to neutral phase
3. stator winding is reversed
4. the commutator segments are short circuited

Correct Option: 4

Q.49 What kind of error does it constitute if only one of the parties to a contract misunderstands its terms or scope?

1. Multilateral mistake
2. Mutual mistake
3. Unilateral mistake
4. Bilateral mistake

Correct Option: 3

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

Q.50 In radial distribution system, separate feeder radiates from single substation and feeds the distributors at _____.

1. three ends
2. four ends
3. one end only
4. two ends

Correct Option: 3

SSC JE 11 Oct 2023 PAPER I Electrical Part 6

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