MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 UNIT 4 Heat and Temperature
81)
The most suitable device to measure temperature of molten metal is:
A.
B.
C.
D.
82)
Thermistors show:
A.
B.
C.
D.
83)
Which thermometer can be used in freezing weather?
A.
B.
C.
D.
84)
Which principle is used in thermocouples?
A.
B.
C.
D.
85)
Infrared thermometers work on detecting:
A.
B.
C.
D.
86)
In natural convection, fluid motion is caused by:
A.
B.
C.
D.
87)
A black surface absorbs:
A.
B.
C.
D.
88)
Conduction is best in:
A.
B.
C.
D.
89)
A device that reduces heat loss in hot water pipes is called:
A.
B.
C.
D.
90)
Which of the following materials is a poor conductor of heat?
A.
B.
C.
D.
91)
When a metal rod is heated, its length:
A.
B.
C.
D.
92)
Thermal expansion depends on:
A.
B.
C.
D.
93)
Which type of expansion is considered in railway track design?
A.
B.
C.
D.
94)
The formula for linear expansion is:
A.
B.
C.
D.
95)
Which of the following has the least thermal expansion?
A.
B.
C.
D.
96)
Which of the following devices compares fluid pressure with atmospheric pressure?
A.
B.
C.
D.