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Directions to Solve

In each questions below five words are given. Find out that word, the spelling of which is WRONG. The letter of that word is the answer. If all the four words are spelt correctly, the answer is 'E', i.e., "All Correct".

Q1: (solve as per the direction given above)

A Appraise

B Commend

C Mentanence

D Behavior

E All correct

Q2: The velocity of piston in a reciprocating steam engine is given by (where ω = Angular velocity of crank, r = Radius of crank pin circle, θ = Angle turned by crank from inner dead centre, and n = Ratio of length of connecting rod to the radius of crank)

A

B

C

D

Q3: The primary unbalanced force is maximum __________ in one revolution of the crank.

A twice

B four times

C eight times

D sixteen times

Q4: The instantaneous centres which vary with the configuration of mechanism, are called

A permanent instantaneous centres

B fixed instantaneous centres

C neither fixed nor permanent instantaneous centres

D none of the above

Q5: The displacement of the reciprocating roller follower, when it has contact with the straight flanks of the tangent cam, is given by (where r1 = Minimum radius of the cam, r2 = Radius of the roller follower, and θ = Angle turned by the cam from the beginning of the follower displacement)

A (r1 - r2)(1 - cosθ)

B (r1 + r2)(1 + cos θ)

C (r1 - r2)

D (r1 + r2)

Q6: In considering friction of a V-thread, the virtual coefficient of friction (μ1) is given by

A μ1 = μ sin β

B μ1 = μ cos β

C

D

Q7: The wear of bearing is proportional to velocity and pressure.

A Yes

B No

Q8: In a shaper mechanism, the coriolis component of acceleration does not exist.

A True

B False

Q9: In a gear having involute teeth, the normal to the involute is a tangent to the

A pitch circle

B base circle

C addendum circle

D dedendum circle

Q10: A body is said to be under forced vibrations, when

A there is a reduction in amplitude after every cycle of vibration

B no external force acts on a body, after giving it an initial displacement

C a body vibrates under the influence of external force

D none of the above