THERMO DYNAMICS QUSTION ANSWER

THERMO DYNAMICS QUSTION ANSWER

1. All the commercial liquid fuels are derived from natural petroleum (or crude oil).
A. True
B. False
Answer: Option A


2. A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
A. Carnot cycle
B. Stirling cycle
C. Otto cycle
D. Diesel cycle
Answer: Option D


3. The efficiency and work ratio of a simple gas turbine cycle are
A. low
B. very low
C. high
D. very high
Answer: Option B


4. The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called
A. specific heat at constant volume
B. specific heat at constant pressure
C. kilo Joule
D. none of these
Answer: Option A

5. There is a loss of heat in an irreversible process.
A. True
B. False
Answer: Option A

6. When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
A. True
B. False
Answer: Option A


7. Which of the following is the lightest and most volatile liquid fuel?
A. Gasoline
B. Kerosene
C. Fuel oil
Answer: Option A

8. Work done by a system is taken to be
a) positive
b) negative
c) zero
d) varies according to situation

Answer: a
Explanation: In thermodynamics, work done by a system is take to be positiv

9.3. Work done on a system is taken to be

a) positive
b) negative
c) zero
d) varies according to situation

Answer: b

Explanation: In thermodynamics, work done on a system is take to be negative.

10.Work is a

a) point function
b) path function
c) depends on the state
d) none of the mentioned

Answer: b
Explanation: Amount of work done depends on the path the system follows.

Hydraulics and Fluid Mechanics Qustion Answer

Hydraulics and Fluid Mechanics Qustion Answer

1. One litre of water occupies a volume of
A. 100 cm 3
B. 250 cm 3
C. 500 cm 3
D. 1000 cm 3
Answer: Option D


2. The value of bulk modulus of a fluid is required to determine
A. Reynold's number
B. Froude's number
C. Mach number
D. Euler's number
Answer: Option C


3. In a depressed nappe
A. the pressure below the nappe is atmospheric
B. the pressure below the nappe is negative
C. the pressure above the nappe is atmospheric
D. the pressure above the nappe is negative
Answer: Option B


4. In one dimensional flow, the flow
A. is steady and uniform
B. takes place in straight line
C. takes place in curve
D. takes place in one direction
Answer: Option B



5. The kinematic viscosity is the
A. ratio of absolute viscosity to the density of the liquid
B. ratio of density of the liquid to the absolute viscosity
C. product of absolute viscosity and density of the liquid
D. product of absolute viscosity and mass of the liquid
Answer: Option A

MECHANICAL ENGG MECHANICS QUESTION ANSWER

MECHANICAL ENGG MECHANICS QUESTION  ANSWER


The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is
A. sin θ
B. cos θ
C. tan θ
D. cosec θ
Answer: Option A


7. The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.
A. less than
B. more than
C. equal to
Answer: Option B


8. The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.
A. depends
B. does not depend
Answer: Option B


9. A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
A. P = W tanα
B. P = W tan(α + φ)
C. P = W (sinα + μcosα)
D. P = W (cosα + μsinα)
Answer: Option C

10. If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
A. 30°
B. 60°
C. 90°
D. 120°
Answer: Option D

MECHANICAL ENGG IMPORTENT QUESTION

HYDRAULIC QUESTION

	One litre of water occupies a volume of
	A. 100 cm3 B. 250 cm3 C. 500 cm3 D. 1000 cm3

Strength of Materials

1.	Strain energy is the
	A. energy stored in a body when strained within elastic limits B. energy stored in a body when strained upto the breaking of a specimen C. maximum strain energy which can be stored in a body D. proof resilience per unit volume of a material

Answer: Option D

Explanation:

No answer description available for this question.