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Thermodynamics
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Question
Which of the following is correct?
Options
A. Absolute pressure = Gauge pressure + Atmospheric pressure
B. Gauge pressure = Absolute pressure + Atmospheric pressure
C. Atmospheric pressure = Absolute pressure + Gauge pressure
D. Absolute pressure = Gauge pressure - Atmospheric pressure
Correct Answer
Absolute pressure = Gauge pressure + Atmospheric pressure
More questions
1. A tank of uniform cross-sectional area (
A
) containing liquid upto height (
H
1
) has an orifice of cross-sectional area (
a
) at its bottom. The time required to bring the liquid level from
H
1
to
H
2
will be
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
2. In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the
Options
A. Reynold's number
B. Grashoff's number
C. Reynold's number, Grashoff's number
D. Prandtl number, Grashoff's number
Show Answer
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Correct Answer: Prandtl number, Grashoff's number
3. The engine torque increases with the increase in engine speed up to a certain point after which it starts to fall down.
Options
A. Correct
B. Incorrect
Show Answer
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Discuss
Correct Answer: Correct
4. In the below figure, the point
E
represents the maximum stress.
Options
A. True
B. False
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Correct Answer: False
5. In oblique cutting system, the tool may or may not generate a surface parallel to the workface.
Options
A. Yes
B. No
Show Answer
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Discuss
Correct Answer: Yes
6. The advantage of having a tandem master cylinder arrangement in automobiles is that it
Options
A. enhances safety by serving two independent lines in a divided-line brake circuit
B. enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss
C. supplies equal fluid pressure to each line of a divided-line brake circuit, thereby preventing the brakes from dragging on one side
D. boosts the brake fluid pressure to reduce the force required to depress the brake pedal
Show Answer
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Discuss
Correct Answer: enhances safety by serving two independent lines in a divided-line brake circuit
7. The material in which the atoms are arranged regularly in some directions but not in others, is called
Options
A. amorphous material
B. mesomorphous material
C. crystalline material
D. none of these
Show Answer
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Discuss
Correct Answer: mesomorphous material
8. Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
Options
A. high neutron absorption cross-section
B. low moderating efficiency
C. high neutron scatter cross-section
D. low neutron absorption cross-section
Show Answer
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Correct Answer: low moderating efficiency
9. Manganese is added in low carbon steel to
Options
A. make the steel tougher and harder
B. raise the yield point
C. make the steel ductile and of good bending qualities
D. all of the above
Show Answer
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Correct Answer: make the steel ductile and of good bending qualities
10. Free carbon in iron makes the metal
Options
A. soft and gives a coarse grained crystalline structure
B. soft and gives a fine grained crystalline structure
C. hard and gives a coarse grained crystalline structure
D. hard and gives a fine grained crystalline structure
Show Answer
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Discuss
Correct Answer: soft and gives a coarse grained crystalline structure
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