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Home » Engineering » Mechanical Engineering » Aptitude Test - 6
1.The viscous force the relative motion between the adjacent layers of a fluid in motion. Which of the following flowing fits best in the sentence?
A. never affects
B. may effect under certain conditions
C. facilitates
D. never affects
2.Pressure intensity or force due to pressure gradient for fluid at rest is considered as which of the following kind of force?
A. Body force
B. Force due to motion
C. Surface force
D. Body force
3.Pressure variation for compressible fluid is maximum for which of the following kind of process?
A. Adiabatic
B. Quasi Static
C. Isothermal
D. Adiabatic
4.Which of the following principle is used for calculating the centre of pressure?
A. Principle of balancing of momentum
B. Principle of momentum
C. Principle of conservation of energy
D. Principle of balancing of momentum
5.Which of the following cannot be the value of absolute pressure of a fluid at any point?
A. 0
B. 1.45 bar
C. � 1 bar
D. 0
6.When the body is completely or partially immersed in a fluid, how much its weight be distributed for it to be in stable equilibrium.
A. Is independent of weight distribution
B. Around the lower part
C. Around the upper part
D. Is independent of weight distribution
7.Which of the following equation must be perfunctorily satisfied while dealing with fluid flow problems?
A. Newton�s third law
B. Law of conservation of momentum
C. Continuity equation
D. Newton�s third law
8.Which among the following is an assumption of Hagen-Poiseuille equation?
A. Fluid is uniform
B. Fluid is laminar
C. Fluid is turbulent
D. Fluid is uniform
9.Which of the following is a formula for the friction factor of circular pipes?
A. Re/64
B. 16/Re
C. 64/Re
D. Re/64
10.Which among the following is not global parameters of fluid?
A. Mass flow rate
B. Density
C. Viscosity
D. Mass flow rate
11.Which of the following is the mathematical technique used to predict physical parameters?
A. Dimensional analysis
B. Temperature analysis
C. Pressure analysis
D. Dimensional analysis
12.Which among the following have the same forces acting on them?
A. Dynamic similarity
B. Geometric similarity
C. Conditional similarity
D. Dynamic similarity
13.Which one is in a state of failure?
A. Solid
B. Liquid
C. Gas
D. Solid
14.A small shear force is applied on an element and then removed. If the element regains it�s original position, what kind of an element can it be?
A. Solid
B. Liquid
C. Fluid
D. Solid
15.In which type of matter, one won�t find a free surface?
A. Solid
B. Liquid
C. Gas
D. Solid
16.If a person studies about a fluid which is at rest, what will you call his domain of study?
A. Fluid Mechanics
B. Fluid Statics
C. Fluid Kinematics
D. Fluid Mechanics
17.The value of the compressibility of an ideal fluid is
A. zero
B. unity
C. infinity
D. zero
18.The value of the Bulk Modulus of an ideal fluid is
A. zero
B. unity
C. infinity
D. zero
19.The value of the viscosity of an ideal fluid is
A. zero
B. unity
C. infinity
D. zero
20.The value of the surface tension of an ideal fluid is
A. zero
B. unity
C. infinity
D. zero
21.Which one of the following is the unit of mass density?
A. kg = m3
B. kg = m2
C. kg = m
D. kg = m3
22.The specific gravity of a liquid has
A. the same unit as that of mass density
B. the same unit as that of weight density
C. the same unit as that of specific volume
D. the same unit as that of mass density
23.The specific volume of a liquid is the reciprocal of
A. weight density
B. mass density
C. specific weight
D. weight density
24.Which one of the following is the unit of specific weight?
A. N = m3
B. N = m2
C. N = m
D. N = m3
25.Which one of the following is the dimension of mass density?
A. [M1 L-3 T0].
B. [M1 L3 T0].
C. [M0 L-3 T0].
D. [M1 L-3 T0].
26.Which one of the following is the dimension of specific gravity of a liquid?
A. [M1 L-3 T0].
B. [M1 L0 T0].
C. [M0 L-3 T0].
D. [M1 L-3 T0].
27.Which one of the following is the dimension of specific volume of a liquid?
A. [M1 L-3 T0].
B. [M-1 L3 T0].
C. [M-1 L-3 T0].
D. [M1 L-3 T0].
28.Which one of the following is the dimension of specific weight of a liquid?
A. [ML-3 T -2].
B. [ML3 T-2].
C. [ML-2 T-2].
D. [ML-3 T -2].
29.Two fluids 1 and 2 have mass densities of p1 and p2 respectively. If p1 > p2, which one of the following expressions will represent the relation between their specific volumes v1 and v2?
A. v1 > v2
B. v1 < v2
C. v1 = v2
D. v1 > v2
30.A beaker is filled with a liquid up to the mark of one litre and weighed. The weight of the liquid is found to be 6.5 N. The specific weight of the liquid will be
A. 6:5 kN = m3
B. 6:6 kN = m3
C. 6:7 kN = m3
D. 6:5 kN = m3
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