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Directions to Solve

Find the correctly spelt words.

Q1: (solve as per the direction given above)

A Furnituer

B Exampel

C Medicine

D Sampal

Q2: The rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a right turn. The effect of gyroscopic couple acting on it will be to raise the stern and lower the bow.

A Agree

B Disagree

Q3: The sliding pairs, turning pairs and screw pairs form lower pairs.

A True

B False

Q4: When a particle moves round the circumference of a circle of radius r with ω rad/s, then its maximum acceleration is ω2r.

A Right

B Wrong

Q5: The static friction

A bears a constant ratio to the normal reaction between the two surfaces

B is independent of the area of contact, between the two surfaces

C always acts in a direction, opposite to that in which the body tends to move

D all of the above

Q6: A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

A 2 mm

B 2.22 mm

C 2.50 mm

D 3.0 mm

Q7: The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke (θ) is equal to

A 90° and 180°

B 45° and 225°

C 180° and 270°

D 270° and 360°

Q8: The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the

A pitch circle

B base circle

C pitch curve

D prime circle

Q9: A pair of friction discs is an example of rolling pair.

A True

B False

Q10: In order to balance the reciprocating masses,

A primary forces and couples must be balanced

B secondary forces and couples must be balanced

C both (a) and (b)

D none of these