KDRB Overseer Grade 2 (Electrical) PYQ Mock Test

Question 1

Which of the following is not a part of India's national debt ?

A

National Savings Certificate

B

Dated Government Securities

C

Life Insurance Policies

D

Provident Funds

Question 2

Consider the following statements about India's national anthem.

(i) It was composed originally in Bengali.

(ii) It was first sung in 1906 at the Kolkata session of the Indian National Congress.

(iii) The complete song consists of six stanzas.

Which among the given statement(s) is/are true ?

A

Only (i)

B

(i) and (iii)

C

Only (ii)

D

(i), (ii) and (iii)

Question 3

Which of the following is/are related to Tiger Census in India ?

(i) Extract Compare

(ii) M-STriPES

(iii) MAGE

(iv) Cytochrome – b - marker

Select the correct answers from the codes given below.

A

(i) and (ii)

B

Only (ii)

C

(i), (ii) and (iv)

D

(i), (ii), (iii) and (iv)

Question 4

Which of the following is/are covered under the priority sector lending ?

(i) Agriculture

(ii) Start ups

(iii) Export Credits

(iv) Renewable Energy Projects

Select the correct answer from the codes given below :

A

Only (i)

B

(i) and (iii)

C

(i) and (iv)

D

(i), (ii), (ii) and (iv)

Question 5

With reference to Going Online as Leaders (GOAL), consider the following statements :

(i) GOAL is a joint initiative of Microsoft and the Ministry of Tribal Affairs.

(ii) It aims to provide online e-commerce platforms to tribal people to sell their products.

Which of the statements given above is/are correct ?

A

Only (i)

B

Only (ii)

C

Both (i) and (ii)

D

None

Question 6

Sai, Orison, Tila, Beri and Sileru are the names of :

A

peaks in India

B

rivers in India

C

birds in India

D

folk dances in India

Question 7

In the history of Travancore, which of the following is not an achievement during the reign of Swathi Thirunal ?

A

First Post Office in Travancore

B

Opening of Trivandrum Observatory

C

First Census of Travancore

D

Introduction of English Education

Question 8

Which of the following are associated with the reign of Asoka ?

(i) Rock cut elephant at Dhauli

(ii) Badami Caves

(iii) Lomas Rishi Caves

(iv) Udayagiri Caves

Select the correct answer using the codes given below.

A

(i) and (ii)

B

(i) and (iii)

C

(iii) and (iv)

D

(ii) and (iv)

Question 9

Which of the following is true about GST Council ?

A

A newly inserted Article 277A provides for the setting up of GST Council.

B

Any decision of the GST Council should be taken by 3/4th majority

C

Union Territories have no representation in the GST Council.

D

The Union Finance Secretary acts as the ex-officio secretary to the GST Council.

Question 10

Arrange the following biogeographic zones of India from largest to smallest in terms of total geographical area.

A

North East Region - Semi Arid – Gangetic Plain – Himalayan zone – Western Ghats

B

Himalayan zone – Gangetic Plain - Semi Arid – Western Ghats – North East Region

C

Semi Arid – Gangetic Plain - Himalayan zone – North East Region – Western Ghats

D

Gangetic Plain – Himalayan zone - Semi Arid – North East Region – Western Ghats

Question 11

The load current corresponding to maximum efficiency of DC generator is given by :

A

I = √WC/Ra2

B

I = V/Ra

C

I2 = √WC/Ra

D

I = √Wc/Ra

Question 12

A.(̄̄A + B) is equal to :

A

AB

B

A

C

̄AB

D

B

Question 13

The reciprocal of reluctance is :

A

Conductance

B

Permeance

C

Reactance

D

Permeability

Question 14

The statement which is false regarding the ladder diagram is :

A

power bar on far left

B

one or more relay coils at the right

C

neutral bar on the right

D

more than one coils are in series

Question 15

The capacitance of a parallel plate capacitor of thickness d meters, plate area A m2, medium consist partly air and partly parallel sided dielectric slab of thickness t, and relative permittivity εr is :

A

ε0εrA / d farad

B

ε0A / d farad

C

ε0A / [d-(t-t/εr)] farad

D

ε0A / [d2-(t-t/εr)] farad

Question 16

The advantages of fuses are :

A

inverse time – current characteristics

B

no maintenance

C

cheapest type of protection

D

all of the above

Question 17

The register is an important building block of :

A

multipliers

B

microprocessors

C

memories

D

all of the above

Question 18

The four register groups of 8051 microcontrollers organized from addresses.:

A

00 to FF

B

00 to 7F

C

00 to 3F

D

00 to 1F

Question 19

The diffusion of holes and electrons take place in diodes because :

A

they move haphazardly due to thermal energy

B

there is a difference in their concentration in the two regions

C

both (A) and (B)

D

none of the above

Question 20

The component of overhead line whose function is to keep the line conductors at a safe distance from each other and from the pole is :

A

V-guards

B

cross-arm

C

phase plates

D

guard wire

Question 21

In a three phase induction motor the torque developed is approximately proportional to :

A

S½

B

S2

C

S-1

D

S

Question 22

The method of breaking, in which the motor is disconnected from the supply and operated as a generator driven by the kinetic energy of the rotating parts of the motor and its driven machine is :

A

plugging

B

regenerative breaking

C

dynamic breaking

D

counter current breaking

Question 23

Negative feedback in an amplifier causes :

A

for decrease in voltage gain

B

for increase in current gain

C

for increase in voltage gain

D

for decrease in bandwidth

Question 24

Which of the semiconductor devices, out of the following is not a current triggered device?

A

SCR

B

GTO

C

TRIAC

D

MOSFET

Question 25

Faraday tube is a :

A

unit tube of electric flux

B

unit tube of magnetic flux

C

unit tube of field intensity

D

None of these

Question 26

In reaction turbine the kinetic energy of water is converted to potential energy by :

A

buckets

B

surge tank

C

draft tube

D

none of the above

Question 27

Electrical characteristics of DC series motor is :

A

hyperbola

B

straight line

C

parabola

D

None of these

Question 28

A D flip-flop can be constructed from an S R flip-flop by inserting :

A

an inverter between S and R and assigning the symbol D to the S input

B

an inverter between S and R and assigning the symbol D to the R input.

C

a J-K flip-flop between S and R and assigning the symbol D to the S input

D

none of the above

Question 29

The dc motor used in electric traction is :

A

Cumulative compound

B

Shunt motor

C

Series

D

Differential compound

Question 30

In forward blocking mode of SCR the junction J2 will have an avalanche breakdown at a voltage called :

A

reverse breakdown voltage

B

forward break over voltage

C

cut in voltage

D

forward voltage

Question 31

The magnetic potential at any point within a magnetic field :

A

is numerically equal to the force experienced by N pole of 1 Weber placed at that point.

B

is the work done in shifting a N-pole of 1 Weber from infinity to that point against the force of the magnetic field.

C

is numerically equal to the force experienced by S pole of 1 Weber placed at that point.

D

None of the above.

Question 32

The lighting scheme which is best suited to rooms with high ceilings where a high level of uniformly distributed illumination is required is :

A

direct lighting

B

semi-direct lighting

C

indirect lighting

D

all of the above

Question 33

The logic gate which can be used as a controlled inverter is :

A

NAND

B

NOR

C

Ex-OR

D

AND

Question 34

The ratio of the number of electrons arriving at collector to the number of emitted electrons is known as :

A

emitter injection ratio

B

emitter efficiency

C

base transportation factor

D

peak in voltage

Question 35

Identify the true statement regarding the operation amplifier.

A

it is a low gain transformer coupled amplifier

B

it is a low gain ac amplifier

C

it is a high gain dc amplifier

D

it is a high gain RC coupled amplifier

Question 36

Retardation test is applicable to :

A

DC series machine for determining stray losses

B

DC shunt machine for determining stray losses

C

DC shunt machine for determining copper losses

D

DC series machine for determining copper losses

Question 37

The change produced in the rotor torque due to a change of 5% in supply voltage of 3 phase induction motor will be :

A

approximately 20%

B

approximately 15%

C

approximately 7.5%

D

approximately 10%

Question 38

The leakage current in the transistor is due to :

A

minority carriers

B

majority carriers

C

both majority and minority carriers

D

none of the above

Question 39

The frequency range of supply for electric heating is :

A

1 kHz to 10 kHz

B

10 MHz to 40 MHz

C

10 kHz to 40 kHz

D

1 MHz to 10 MHz

Question 40

In a type C chopper the power flow may be :

A

source to load

B

load to source

C

A or B

D

A and B

Question 41

Identify the true statement of the following:

A

Current rating of fuse element is always more than its fusing current

B

In transmission lines the ground wires run below the line conductors

C

Loop-in-system is universally used for connections of various lamps and other appliances in parallel

D

Sodium vapour lamp is only suitable for operation in dc

Question 42

The specific resistance or resistivity of copper is :

A

0.71 Ohm meter

B

1.07 Ohm meter

C

2.7 Ohm meter

D

1.72 Ohm meter

Question 43

In a super heater of thermal power plants :

A

pressure rises and temperature remains the same

B

temperature rises and pressure remains unchanged

C

temperature rises and pressure drops

D

pressure rises and temperature drops

Question 44

If an alternating voltage of constant magnitude but of varying frequency is applied to an RLC series circuit at low frequency :

A

the impedance is large

B

net circuit reactance is inductive

C

the power factor is leading

D

both (A) and (C)

Question 45

The decimal equivalent of hexadecimal number AC16 is :

A

172

B

127

C

177

D

173

Question 46

Shaft torque of DC motor is :

A

HP/2πN / 60 N.m

B

output in watts / 2πN/60 N.m

C

Hpx746/2πN2 / 60 N.m

D

output in watts / 2πN N.m

Question 47

Sodium vapour lamps are used for the illumination of :

A

parks

B

rail yards

C

streets and highways

D

all of the above

Question 48

A DC line carries :

A

more power than AC line

B

same power as in AC line

C

less power than in AC line

D

none of the above

Question 49

Cumulative compound motor is used in :

A

electric locomotives

B

centrifugal pumps

C

for shears and punches

D

None of the above

Question 50

The rate of change of potential with distance in the direction of electric force is :

A

electric flux density

B

potential gradient

C

break down voltage

D

electric intensity

Question 51

The amplifier becomes an oscillator when :

A

Aβ = -1

B

Aβ = 1

C

Aβ = 0

D

Aβ < 1

Question 52

The number of commutator segments of DC generator is :

A

equal to the number of turns in the armature winding

B

equal to number of armature conductors

C

equal to number of armature coils

D

equal to number of poles

Question 53

1 kWh is equal to :

A

4186J

B

36 x 103 J

C

8600 kcal

D

36 x 105 J

Question 54

When a voltage V3m Sin3ωt is applied to a pure inductor L then inductive reactance is :

A

1.5 ωL

B

1.3 ωL

C

3 ωL

D

9 ωL

Question 55

What is the height of the roof pole ?

A

not exceeding 3 m

B

not exceeding 3.5 m

C

not exceeding 2.5 m

D

not exceeding 5 m

Question 56

Snubber circuit is used in thyristor for :

A

di/dt protection

B

false turn on of a thyristor by large dv/dt

C

false turn -on of a thyristor by large di/dt

D

all of the above

Question 57

The dynamic imput resistance of common base configuration is :

A

of the order of IM Ω

B

20 Ω to 100 Ω

C

of the order of 10M Ω

D

200 Ω to 500 Ω

Question 58

Q factor of a coil is :

A

R/Z

B

2π maximum energy stored / energy dissipated per cycle

C

4π maximum energy stored / energy dissipated per cycle

D

2π energy dissipated per cycle / maximum energy stored

Question 59

Peak inverse voltage of a centre – tap rectifier is :

A

Vm

B

2Vm

C

0.5Vm

D

4Vm

Question 60

The minimum size of earth continuity conductor is :

A

2.9 mm2

B

2.5 mm2

C

2 mm2

D

1.5 mm2

Question 61

The stator of modern alternators is wound for :

A

240° phase group

B

90° phase group

C

360° phase group

D

60° phase group

Question 62

Skin effect in transmission line is due to :

A

supply voltage

B

supply frequency

C

self inductance of the conductor

D

both (B) and (C)

Question 63

The limiting value of leakage current in an electrical installation is :

A

not exceeding 1/500 of maximum supply current

B

not exceeding 1/50000 of maximum supply current

C

not exceeding 1/5000 of maximum supply current

D

not exceeding 1/50 of maximum supply current

Question 64

The rate of rise of restriking voltage of circuit breaker depends on :

A

inductance and capacitance of the system

B

system voltage only

C

circuit power factor only

D

both (A) and (C)

Question 65

All day efficiency of transformer is always :

A

higher than commercial efficiency

B

equal to commercial efficiency

C

less than commercial efficiency

D

none of the above

Question 66

BCD code of 5632 is :

A

0101 0110 0011 0010

B

0101 0100 1100 0010

C

0010 0011 0001 0101

D

1010 0110 0011 0010

Question 67

2's compliment of the number 1110101 is :

A

0101011

B

0001011

C

0001101

D

0101111

Question 68

The type of wiring which is suitable for temporary wiring is :

A

Casing and capping

B

CTS or TRS

C

Cleat wiring

D

Conduit wiring

Question 69

Languages encountered in PLCs :

A

ladder programming

B

C programming

C

statement list programming

D

both (A) and (C)

Question 70

The transistor configurations in which the emitter-base junction is always forward biased and collector-base junction is always reverse biased is :

A

common emitter configuration

B

common collector configuration

C

common base configuration

D

all of the above

Question 71

16 bits registers of 8051 microcontroller :

A

program counter

B

data pointer

C

register A

D

both (A) and (B)

Question 72

Maximum permissible value of earth resistance in large power station is :

A

1.0 Ω

B

0.5 Ω

C

2 Ω

D

.0.75 Ω

Question 73

A decoder converts an n bit binary input code into :

A

2n output lines

B

n2 output lines

C

2n output lines

D

n3 output lines

Question 74

Single phase de drives which offers two quadrant operation is :

A

half-wave converter drive

B

Semi converter drive

C

full converter drive

D

dual converter drive

Question 75

Transmission lines are transposed :

A

to reduce corona

B

to reduce skin effect

C

voltage drop in the lines can be minimized

D

balance line voltage

Question 76

The direct lighting scheme is most efficient but is liable to cause :

A

monotony

B

glare

C

rising main

D

all of the above

Question 77

Sum of products (SOP) is basically :

A

an AND operation of OR operated variable

B

an OR operation of AND operated variable

C

both (A) and (B)

D

none of the above

Question 78

An induction motor is working in field – weakening mode with :

A

variable voltage and constant frequency

B

increased voltage and constant frequency

C

constant voltage and increased frequency

D

constant voltage and decreased frequency

Question 79

The ratio of differential gain and common mode gain of an op-amp is :

A

Slew rate

B

Gain of op-amp

C

CMRR

D

CMMR

Question 80

A 4- flip-flop counter can count as high as :

A

1610

B

1010

C

2010

D

1510

Question 81

The test voltage of the Megger is :

A

500

B

2500

C

750

D

(A) or (B)

Question 82

Most of ammeter coils of PMMC instruments are wound on non magnetic formers because :

A

that provide required electromagnetic damping

B

coil turns are effectively shorted by the ammeter shunt

C

coil turns are effectively shorted by the load

D

none of the above

Question 83

Error limit of an instrument is :

A

0.67σ

B

3σ

C

0.39/σ

D

0.71/σ

Question 84

In an induction type energy meter the flux produced by the pressure coil current is :

A

lead the applied voltage by an angle 90°

B

lag the applied voltage by an angle △ less than 90°

C

lag the applied voltage by an angle 90°

D

lead the applied voltage by an angle △ less than 90°

Question 85

According to Hindu mythology which God must be offered prayers before anyone else ?

A

Parasurama

B

Shiva

C

Vishnu

D

Ganesha

Question 86

The damping used in dynamometer type watt meter is :

A

Eddy current

B

Electromagnetic

C

Air friction

D

Fluid friction

Question 87

In a digital instruments sine wave is converted into rectangular pulse is by :

A

sample and hold circuit

B

schmitt trigger

C

differential amplifier

D

sawtooth generator

Question 88

The Place famous for Padayani :

A

Guruvayoor

B

Varkala

C

Kodungallur

D

Kadamminatta

Question 89

Who composed Mahabharatha ?

A

Valmiki

B

Kalidasa

C

Vedavyasa

D

Sankaracharya

Question 90

Prominent deity in Rigveda is :

A

Agni

B

Varuna

C

Rudra

D

Indra

Question 91

Who is the author of Thanthrasamuchaya ?

A

Sree Narayanaguru

B

Chattampi Swamikal

C

Chennas Narayanan Namboodiripad

D

Vagbhadanada Gurudeva

Question 92

Odisha is famous for which Sun temple among the following ?

A

Suryanarayan Swami temple

B

Konark sun temple

C

Suryanar temple

D

Modhera sun temple

Question 93

Typical secondary transducer element is :

A

burdon tube

B

spring

C

vanes

D

strain gauge

Question 94

Which musical instrument is not a part of Panchavaadya ?

A

Veena

B

Thimila

C

Thoppi-Maddalam

D

Idayka

Question 95

The most sacred structure in a temple complex is :

A

Gopura

B

Sree kovil

C

Thitappalli

D

Oottupura

Question 96

Who is not an Avathara of Mahavishnu ?

A

Vamana

B

Bairava

C

Narasimha

D

Sree Krishna

Question 97

Transducer used for the measurement of displacement is :

A

LVDT

B

shaft recorder

C

differential capacitor

D

strain gauge

Question 98

The power of three - wire balanced system was measured by two wattmeter method. The reading of the one of the wattmeter was found to be negative deflection. What is the pf?

A

0.5

B

Below 0.5

C

0.866

D

1

Question 99

Sree Padmanabha Swami temple Thiruvananthapuram is the example of which style of temple architecture ?

A

Nagara

B

Vesara

C

Dravida

D

Champa

Question 100

Lissajous pattern obtained on the screen of a CRO can be used to determine.

A

phase shift

B

amplitude distortion

C

frequency

D

voltage magnitude

103/2022 - Overseer Grade 2 (Electrical) - Travancore Devaswom