PKR ELECTRICAL ENGINEERING
Q.1 Materials which can store electrical energy are called
(A) magnetic materials. (B) semi conductors.
(C) dielectric materials. (D) super conductors.
Ans: C
Q.2 ACSR (Aluminium Conductor Steel Reinforced) are used as
(A) over head transmission lines. (B) super conductors.
(C) fuse (D) underground cables.
Ans: A
Q.3 Brass is an alloy of
(A) copper and zinc. (B) copper and iron.
(C) copper and Aluminium. (D) copper and tin.
Ans: A
Q.4 Property of material which allows it to be drawn out into wires is
(A) Ductility. (B) Solder ability.
(C) Super conductivity. (D) Malleability.
Ans: A
Q.5 In n type semi conductor added impurity is
(A) pentavalent. (B) divalent.
(C) tetravalent. (D) trivalent.
Ans: A
Q.6 The covers of electrical machines are made of
(A) soft magnetic materials. (B) hard magnetic materials.
(C) super conductors. (D) semiconductors.
Ans: A
Q.7 The dielectric constant of air is practically taken as
(A) more than unity. (B) unity.
(C) less than unity. (D) zero.
Ans: B
Q.8 n-type semiconductor is an example of
(A) extrinsic semiconductor. (B) intrinsic semiconductor.
(C) super conductor. (D) insulators..
Ans: A
Q.9 Atomic weight of an atom is
(A) sum of the number of protons and neutrons.
(B) sum of the number of protons and electrons.
(C) sum of the number of electrons and neutrons.
(D) sum of the number of electrons, protons and neutrons.
Ans: A
Q.10 Gold and silver are
(A) dielectric materials
(B) low resistivity conducting materials.
(C) magnetic materials.
(D) insulating materials.
Ans: B
Q.11 Phenol and Formaldehyde are polymerised to a resultant product known as
(A) PVC.
(C) polyester.
(B) bakelite.
(D) teflon.
Ans: B
Q.12 Dielectric materials are
(A) Insulating materials.
(B) Semiconducting materials.
(C) Magnetic materials. (D) Ferroelectric materials.
Ans: A
Q.13 Thermocouples are used for the measurement of
(A) humidity. (B) pressure.
(C) temperature. (D) density.
Ans: C
Q.14 Large scale integration chips have between
(A) Less than 10 components. (B) 10 and 100 components.
(C) 100 and 1000 components. (D) More than 1000 components.
Ans: C
Q.15 All semiconductors in their last orbit have
(A) 8 electrons. (B) 2 electrons.
(C) 4 electrons. (D) 6 electrons.
Ans: C
Q.16 The material with lowest resistivity is
(A) constantan. (B) silver.
(C) manganin. (D) nichrome.
Ans: B
Q.17 The property due to which the resistance of some metal or compound vanishes under certain
conditions is
(A) Semi conductivity. (B) Super conductivity.
(C) Curie point. (D) Magnetostriction.
Ans: B
Q.18 Bronze is an alloy of
(A) copper. (B) aluminium.
(C) silver. (D) carbon.
Ans: A
Q.19 Ceramics are good
(A) insulators. (B) conductors.
(C) superconductors. (D) semiconductors.
Ans: A
Q.20 The critical temperature above which the ferromagnetic materials loose their magnetic
property is known as
(A) hysterisis. (B) Curie point.
(C) transition temperature. (D) standard temperature.
Ans: B
Q.21 Permanent magnets are made of
(A) soft magnetic materials. (B) hard magnetic materials.
(C) semi conductors. (D) super conductors.
Ans: B
Q.22 Holes are majority carriers in
(A) P-type semiconductors. (B) N-type semiconductors.
(C) Insulators. (D) Superconductors.
Ans: A
Q.23 Materials, which provide a path to the magnetic flux, are classified as
(A) insulating materials.
(C) magnetic materials.
(B) semi conducting materials.
(D) dielectric materials.
Ans: C
Q.24 Germanium possesses
(A) one valence electrons.
(B) two valence electrons.
(C) three valence electrons. (D) four valence electrons.
Ans: D
Q.25 Dielectric constant of vacuum is
(A) infinity.
(B) 100.
(C) one. (D) zero.
Ans: C
Q.26 Ferrites are
(A) ferromagnetic material.
(B) ferrimagnetic materials.
(C) anti ferromagnetic material. (D) diamagnetic materials.
Ans: A
Q.27 The relative permeability of a paramagnetic substance is
(A) unity. (B) slightly more than unity.
(C) zero. (D) less than unity.
Ans: B
Q.28 Hall effect may be used for which of the following?
(A) determining whether the semiconductor is p or n type.
(B) determining the carrier concentration.
Ans : A
MCQ ABOUT DRAWING TOOLS
How many battens will be there for a Drawing board?
a) 1
b) 2
c) 3
d) 4
Ans : b
The part that doesn’t belong to T-square is ____
a) Working edge
b) Blade
c) Stock
d) Ebony
Ans : d
The angle which we can’t make using a single Set-square is
a) 45o
b) 60o
c) 30o
d) 75o
Ans: d
The angle which we can’t make using both the Set-squares is _
a) 15o
b) 105o
c) 165o
d) 125o
Ans: d
Small bow compass can draw circles less than _ mm radius.
a) 25mm
b) 30mm
c) 35mm
d) 40mm
Ans : a
The areas of the two subsequent sizes of drawing sheet are in the ratio
a) 1:5
b) 1:4
c) 1:2
d) 1:10
Ans: c
The Grade becomes according to the figure placed in front of the letter B, 2B, 3B, 4B etc.
a) harder
b) lighter
c) darker
d) softer
Ans: d
Which of the following tools is used to draw horizontal lines?
a) Mini – drafter
b) Protractor
c) T – square
d) French curve
Ans: c
Which of the following instrument can be used to draw accurate perpendicular lines, parallel lines and angular lines?
a) Mini – drafter
b) T – square
c) Protractor
d) Set square
Ans: a
According to the Indian Standard Institute (ISI), which among the following designation has the size 1000 x 700 (in mm)?
a) B0
b) B1
c) B2
d) B3
Ans: b
Which is the most common tool used for drawing circles?
a) French curve
b) Mini – drafter
c) Divider
d) Compass
Ans: d
For drawing circles with a large radius, which of the following tool is used?
a) Bow compass
b) Lengthening bar compass
c) Divider
d) Protractors
Ans: b
Which of the following drawing tools is used by architects for making blueprints?
a) Drawing Pencils
b) Dusters
c) Ink Pen
d) Erasers
Ans: c
Which of the following drawing tool is not used to set the drawing sheet onto the drawing board?
a) Drawing clips
b) Drawing pins
c) Divider
d) Adhesive Tape
Ans: c
According to the Indian Standard Institution (ISI), what is the size of the designation A3 in mm?
a) 420 x 297
b) 841 x 594
c) 1189 x 841
d) 297 x 210
Ans:a
For marking angles, which of the following drawing tool is used?
a) Protractor
b) Divider
c) Compass
d) French curve
Ans:a
Using 30˚ – 60˚ – 90˚ and 45˚ – 45˚ – 90˚ set squares, which of the following angle is not possible to draw?
a) 45˚
b) 30˚
c) 10˚
d) 90˚
Ans:c
Which is the instrument used to draw parallel lines fast?
a) Set square
b) Ruler scale
c) Protractor
d) Roll-n-draw
Ans: d
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