40.

The speed of an engine is seen to fluctuate Continuously above and below mean speed. The
governor is said to be :

(A) isochronous (0) hunting
(C) over sensitive (D) unstable
41. Which motor will be suitable for traction?
(4) DC series motor (B) DC shunt constant speed
(C) DC shunt adjustable speed (D) compound motor
42. When two spur gears having involute profiles on their tooth engage the line of action is
tangential to :
(4) pitch circle (8) dedendum circle
(C) addendum circle (D) base circle
48. Crowning of pulleys is generally done :
(ಹ) to reduce the belt friction
(B) to dissipate the heat generated due to friction
(C) - to perfect the belt joint so that it may not break while running
(D) to prevent the belt from running of the pulley
44. A simply supported beam of span 10 m carrying a load of 500 N at the midspan will have a
maximum bending moment of :
ಯ) 500 Nm (B) 1250 Nm
(C) 2500 Nm (D) 5000 Nm
45. The diameter of shaft is increased from 50 mm to 100 mm all other conditions remaining
unchanged. How many times the torque carrying capacity increases?
(¢) 2times (B) 4 times
(C) 8times : (D) 16 times
46. If a compression coil spring of stiffness 10 N/m is cut into two equal parts and the used in
parallel the equivalent spring stiffness will be :
(4) 10 N/m (B) 20 N/m
(C) 40 N/m (D) 80 N/m
47. A differential gear in an automobile is :
(ಗ) simple gear train (®) epicyclic gear train
(C) compound gear train (D) none of these
147/2015 8 . A