18.

19.

20.

21.

22.

23.

24.

23,

26.

27.

28.

29.

30.

.اڈ

U V1116 Pages: 5

Find the overall efficiency of a turbine if the mechanical efficiency is 80% and hydraulic efficiency is 90%
a) 88 b) 90 c) 72 d) 30

In a centrifugal pump casing, the flow of water leaving the impeller is
a) Rectilinear flow b) Radial flow c) Forced vortex flow d) Free vortex flow

Hydraulic accumulator is a device used for

a) Lifting heavy b) Storing theenergy of ௦) Increasing pressure 9) Transmitting power
weights a fluid in the form of intensity of a fluid from one shaft to
pressure energy another shaft

The most efficient method of compressing air is to compress it

a) Isothermally 0) Adiabatically 9 Isentropically 6) Isobarically

The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

a) Slip factor b) Velocity factor c) Velocity coefficient 9) Blade effectiveness
A group of resistant bodies with rigid connection preventing their relative movement is called

a) Kinematic pair b) Link c) Rigid body d) Kinematic chain
Angle between normal to the pitch curve at a point and direction of motion of the follower

a) Pressure angle b) Angle of action c) Angle of ascent d) Angle of dwell

Which of the following displacement programme should be chosen for better dynamic performance of a cam and
follower mechanism

a) Cycloidal b) Simple harmonic c) Constant velocity d) Constant acceleration
motion and deceleration
The axes of the first and last gears are coaxial in

a) Simple gear train b) Compound एव्व की c) Reverted geartrain १) Epicyclic gear train

In case of a worm and worm gear maximum efficiency is equal to

a) l+sing 0) 1l-sing ०) 1+sing d) sing
1-10 1+ 5114 sing 1- 5114
A point on the coupler is to be guided along a prescribed path in
a) Function b) Motion generation c) Path generation d) Overlay method
generation
Work done in a quasi-static process
a) depends on the b) independent of the ௦) depends only onthe 6) none of the
path followed path followed initial and final mentioned
states
Which of the following is true in regard to the energy of an isolated system?
a) 0 b) 20 c) E=constant d) all of the mentioned
Entropy is a
a) path function, 0) path function, c) point function, d) point function,
intensive property extensive property intensive property extensive property

Page 3 of 5