Rajasthan Technical Education Second Year Paper 2016 Theory of Mechnics

Rajasthan Technical Education Second Year Paper 2016 Theory of Mechnics

If J is no. of binary joints and L is no. of links in kinematic chain, then the quation of constraint chain is
(a) J = (3/2)L – 2
(b) J = (3/2)L+2
(c) J= (2/3)L+2
(d) J=(2/3)L-2

The quick return Whitworth mechanism can be obtained by fixing which part of an IC engine ?
(a) Piston
(b) Connecting rod
(c) Crank
(d) Cylinder

A mechanism has 6 links with all binary pairs, then no. of instantaneous centres will be
(a) 15
(b) 21
(c) 18
(d) 20

In case of flywheel the maximum fluctuations of energy is the
(a) sum of maximum and minimum energies
(b) difference of maximum and minimum energies
(c) ratio of maximum and minimum energy
(d) ratio of minimum and maximum energy

Inverted gear train
(a) one gear is always fixed
(b) the axis of first gear and last gear are parallel
(c) at least one of gear axis is in motion
(d) the axis of first gear and last gear are coaxial

The maximum permissible velocity in belt, considering centrifugal tensiion is
(a) proportional to cube root of maximum tension
(b) proportional to the maximum tension
(c) inversely proportional to maximum tension
(d) proportional to square root of maximum tension

The creep in a belt drive is due to the
(a) Weak materials of pulleys
(b) Weak material of belt
(c) Unequal size of pulleys
(d) unequal tenions on two sides of pulleys

The flat collar bearing are provided with multiple collar to
(a) Increase the intensity of pressure
(b) Increase frictional resistance
(c) Distribute frictional load
(d) Distribute axial load

Pick odd one out
(a) Ball bearing
(b) Roller bearing
(c) Double row ball bearing
(d) Journal bearing

In which of the following a fly wheel is generally employed ?
(a) Lathe
(b) Electric motor
(c) Gear box
(d) Punching machine

Rope brake dynamometer uses lubricant as
(a) Oil
(b) Water
(c) Grease
(d) No lubricant

Which of the following brake is generally used in railway train ?
(a) Internal expanding brake
(b) Band brake
(c) Block or shoe brake
(d) None of the above

At a poarticular rotational speed the unbalanced force due to revolving masses
(a) varies both in magnitude and direction
(b) is constant in magnitude and direction
(c) varies in magnitude but is constant in direction
(d) is constant in magnitude but varies in direction