D:-None of the above
Correct Answer:- Option-A
Question28:-The unit of coefficient of convective heat transfer 'h' is expressed as
A:-W/mK
B:-W/meK
C:-W/hmk
D:-W/h2mPK
Correct Answer:- Option-B
Question29:-An increase in the percentage of carbon in steel results into decrease in its
A:-Hardness
B:-Corrosion resistance
C:-Ultimate strength
D:-Ductility
Correct Answer:- Option-D
islocation in materials is a defect.

C:-Plane
D:-volumetric
Correct Answer:- Option-B
Question31:-For transmission of maximum power the maximum tension in the belt should be
A:-Equal to centrifugal tension
B:-Two times the centrifugal tension
C:-Three times the centrifugal tension
D:-Four times the centrifugal tension
Correct Answer:- Option-C
Question32:-A worm gearing is used to obtain speed reduction between shafts whose axes are
A:-Perpendicular and do not intersect
B:-Inclined
C:-Parallel
D:-Perpendicular and intersect
Correct Answer:- Option-A
Question33:-A 50mm diameter rod is to be tumed on a lathe at a cutting speed of 30m/minute. The required spindle speed
1೧ ಗಾಗಾ 570016 0 approximately.
A:-160
B:-170
C:-180
D:-190
Correct Answer:- Option-D
Question34:-The angle between the face and flank of the single point cutting tool is known as
A:-Rake angle
B:-Clearance angle
C:-Lip angle
D:-Point angle
Correct Answer:- Option-B

Question35:-The swaying couple in locomotives has maximum or minimum value when the angle of inclination of crank with
the line of stroke.

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८:- 60768)
D:- 90~ (@)
Correct Answer:- Option-B
Question36:-At a particular rotational speed the unbalanced force due to revolving mass
A:-varies both ‏ما‎ magnitude and direction
B:-is constant in magnitude as well as direction
C:-varies in magnitude but is constant in direction
D:-is constant in magnitude but varies in direction
Correct Answer:- Option-D
Question37:-The static deflection of a shaft under a fly wheel is 1mm. What is the critical speed in rad/s if *g=10m//s~(2)"