# Electrician Mostly Asked MCQ PDF Part Five For RRB ALP/Technician CBT 2

Electrician Mostly Asked MCQ PDF Part Five For RRB ALP/Technician CBT 2

Here we are providing mostly asked MCQ PDF of Electrician Trade  For RRB ALP/Technician CBT 2 stage exam,It will be provide help to aspirants who are going to appear this exam.Next part will be upload tomorrow.

RRB ALP/Technician CBT 2 Online Test Series Will Be Start After Stage First Result.

1.The capacity of capacitor bank used in power factor correction is expressed in terms of
A.kW
B.kVA
C.kVAR
D.volts

2.While testing a capacitor with ohm-metre, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is

A.short-circuited
B.open circuited
C.alright
D.leaky

3.If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be

A.800 uC
B.900 uC
C.1200 uC
D.1600 uC

4.Which capacitor will be physically smaller for the same ratings ?

A.Ceramic capacitor
B.Paper capacitor
C.Both will be of equal size
D.None of these

5.What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?

A.50 pF
B.100 pF
C.150 pF
D.200 pF

6.A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance ?

A.Ceramic capacitor
B.Mica capacitor
C.Both will have identical value of capacitance
D.It depends on applied voltage

7.Which of the following material has least value of dielectric constant ?

A.Ceramics
B.Oil
C.Glass
D.Paper

8.Which of the following capacitors will have the least value of breakdown voltage ?

A.Mica
B.Paper
C.Ceramic
D.Electrolytic

9.The breakdown voltage for paper capacitors is usually

A.20 to 60 volts
B.200 to 1600 volts
C.2000 to 3000 volts
D.more than 10000 volts

10.Dielectric constant for mica is nearly

A.200
B.100
C.3 to 8
D.1 to 2

11.The value of dielectric constant for vacuum is taken as

A.zero
B.1
C.4
D.10

12.Which of the following capacitors is marked for polarity ?

A.Air
B.Paper
C.Mica
D.Electrolytic

13.Which of the following capacitors can be used for temperature compensation ?

A.Air capacitor
B.Ceramic capacitor
C.Paper capacitor
D.None of these

14.Which of the following statements is incorrect ?

A.The thinner the dielectric, the more the capacitance and the lower the voltage breakdown rating for a capacitor .
B.A six dot mica capacitor colour coded white, green, black, red and yellow has the capacitance value of 500 pF
C.Capacitors in series provide less capacitance but a higher voltage breakdown rating for the combination
D.A capacitor can store charge be¬cause it has a dielectric between two conductors

15.Paper capacitors usually have a tolerance of

A.± 5%
B.± 10%
C. ± 15%
D.± 20%

16.For closer tolerances which of the following capacitors is usually preferred ?

A.Paper capacitor
B.Mica capacitor
C.Ceramic disc capacitor
D.None of these

17.The electrostatic force between two charges of one coulomb each and placed at a distance of
0.5 m will be
(a) 36 x 10 N
(b) 36 x 10⁷ N
(c) 36 x 10⁸ N
(d) 36 x 10⁹ N

18.The units of volume charge density are

A.Coulomb/metre
B.Coulomb/metre
C.Coulomb/metre
D.Coulomb/metre

19.”The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”. The above statement is associated with

A.Gauss’s law
B.Kirchhoff s law
C.Ohm’s law
D. Lenz’s law

20.Dielectric strength of mica is

A.10 to 20 kV/mm
B.30 to 50 kV/mm
B.50 to 200 kV/mm
C.300 to 500 kV/mm

21.The dielectric constant (relative permittivity) of glass is given by

A.0.1 to 0.4
B.0.5 to 1.0
C.2.0 to 4.0
D.5 to 100

22.Capacitors are mainly used for radio frequency tuning.

A.Paper
B.Air
C.Mica
D.Electrolytic

23.capacitors are used in transistor circuits.

A.Ceramic
B.Paper
C.Air
D.Electrolytic

24.Capacitors are used for audio frequency and radio frequency coupling and tuning.

A.Air
B.Mica
C.Plastic film
D.Ceramic