01. Reciprocating pump is also called
positive
displacement pump.
02. Hydraulic ram works on the principle of
inertia forces of water in the supply line
SOLUTION
Hydraulic ram is pump that lifts small quantities of water to greater heights from large quantities of water available at smaller heights.
03. In laminar flow through circular pipe, the friction factor depends upon
Reynolds number only.
04. The work done in a free expansion
process is
Zero.
05. Constant volume process is also known
as
lsochoric or lsometric
SOLUTION
Constant Volume- lsochoric or lsometric.
Constant Pressure-
lsobaric or lsopiestic
Constant Temperature-
lsothermal
06. Which of the following flux coating
materials act as an arc stabilizers?
Potassium Silicate
SOLUTION
Arc Stabilizers is
Sodium Oxide, Potassium Oxide and
Potassium Silicate.
07. Nature of fluid flow in pipe (laminar)
depend upon
Average velocity and
Reynold's No.
08. A low head axial flow turbine is
Kaplan
SOLUTION
Kaplan turbines is a low head axial flow turbine.
09. In inventory control theory, the economic
order quantity is
Optimum lot size.
SOLUTION
Economic order quantity is that size of order which minimizes total annual cost of carrying inventory and cost of ordering under the assumed conditions of certainty and that annual demands.
10. Hobbing tool is a
multi point cutting tool.
11. Which of the following is true about nose radius of the tool?
It provides better surface
finish.
It strengthen the tool
nose by reducing stress
concentration.
It increases tool life.
All of the above.
12. Which of the following is an independent variable in the cutting process?
Lubrication.
SOLUTION
Dependent variable is
Force or power requirements, maximum temperature in cutting, Surface finish.
13. Which of the following relation represent the torsional stiffness of shaft?
GJ/L.
SOLUTION
Where
G = Shear modulus of elasticity.
J = Polar moment of inertia.
L = Length of shaft.
14. A bar held between two rigid supports it will be subjected to compressive stress if it is
Heated.
15. If gas turbine is accompanied with
intercooling, reheat and regeneration then
Heat supplied increases.
16. Heat & work are
both is the path function.
17. When heat added to the system
we take positive sign.
18. In the steady flow,
stream line=Path line=
Streak line.
19. In which of the following fluid the shear stress is proportional to the rate of shear strain.
water.
SOLUTION.
Water is Newtonian fluid and in the Newtonian fluid shear stress is proportional to the rate of shear strain.
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