MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Electrical Engineering
Electrical Engineering Materials
Quiz 5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Q.1
The structure sensitive property of a super conductor is
Critical magnetic field
Transition temperature
Critical current density
None of the above
Q.2
Spark plug makes use of which of the following materials for insulation ?
Porcelain
Slate
Asbestos
Glass
Q.3
The kinetic energy of a bounded electron is
Less than that of unbounded electron
Greater than that of unbounded electron
Equal to that of unbounded electron
Infinite
Q.4
Super conductivity can be destroyed by
Adding impurities
Reducing temperatures
Application of magnetic field
Any of the above
Q.5
The conductivity of a conductor can be increased by
Decreasing its temperature
Increasing its temperature
Decreasing its vibration
Increasing its vibration
Q.6
Due to which of the following factors the brush wear rate is altered?
Speed of the machine
Contact pressure
Surface conditions of brush and commutator
All of the above
Q.7
Which of the following affect greatly the resistivity of electrical conductors?
Composition
Pressure
Size
Temperature
Q.8
Selenium is _____ semiconductor.
Extrnisic
Intmisic
N-type
P-type
Q.9
Constantan contains
Silver and tin
Copper and tungsten
Tungsten and silver
Copper and nickel
Q.10
An H.R.C. fuse is
A ceramic body having metal and caps
A wire of platinum
A heavy cross-section of copper or aluminium
A ceramic tube having carbon rod inside it
Q.11
Which of the following materials is used for making coils of standard resistances ?
Copper
Nichrome
Platinum
Manganin
Q.12
Mercury as an electric contact material is
A liquid
A metal
A metal liquid
A gas
Q.13
________ has the best damping properties.
Diamond
High speed steel
Mild steel
Cast iron
Q.14
On which of the following factors does the resistivity of a material depend ?
Resistance of the conductor
Area of the conductor section
Length of the conductor
All of the above
Q.15
Piezoelectric materials serve as a source of ________ .
Resonant waves
Musical waves
Microwaves
Ultrasonic waves
Q.16
The minority carrier concentration is largely a function of
Forward biasing voltage
Reverse biasing voltage
Temperature
The amount of doping
Q.17
The tiny block formed by the arrangement of a small group of atoms is called the
Unit cell
Space lattice
Either A or B
None of the above
Q.18
The number of atoms per unit cell in B.C.C. structure is
1
2
4
8
Q.19
Which of the following variety of copper has the best conductivity ?
Induction hardened copper
Hard drawn copper
Pure annealed copper
Copper containing traces of silicon
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page