Q.1
In a belt drive the mass of the belt is 1 kg/m and its speed is 6m/s. The drive transmits 9.6 KW of power. Determine the strength of the belt when the coefficient of friction is 0.and wrap angle is 220°.
  • a) 2629.78 N
  • b) 2404.73 N
  • c) 2003.09 N
  • d) 1829.78 N
Q.2
What power is transmitted by belt and pulley arrangement, if tension on tight side of belt iskg and tension on slack side is 25kg. The diameter and speed of driving pulley is 0.m andrpm respectively.
  • a) 5.239 KW
  • b) 9.624 KW
  • c) 2.264 KW
  • d) 4.269 KW
Q.3
A counter shaft of engineering workshop is being driven by electric motor with the help of canvas belt and pulley arrangement such that the speed of belt ism/min and it transmitsKW. What will be the difference between tensions on either side of the belt?
  • a) 10000
  • b) 100
  • c) 5000
  • d) 50
Q.4
If a driven pulley is made to rotate atrpm by a driving pulley of 0.3 m diameter, running atrpm, what will be the length of open belt drive when the pulleys are 2 m apart?
  • a) 7.14 m
  • b) 6.45 m
  • c) 8.88 m
  • d) 10 m
Q.5
Two pulleys are connected by a belt. The sum of the diameter of two pulleys iscm and while one makesrpm, the other makesrpm. What will be the diameters of the other pulley?
  • a) 14.1234 cm, 21.9876 cm
  • b) 34.357 cm, 24.0473 cm
  • c) 18.426 cm, 15.921 cm
  • d) 64.2857 cm, 25.7142 cm
Q.6
While testing a wheat thresher at recommended throughout,Nm torque is recorded atrpm at the main shaft of the threshing cylinder, which is operated by a 200-mm diameter V pulley. The overload factor and unit mass of V-belt are 1.2 and 0.9 kg/m respectively. At condition of maximum power transfer the maximum tension in V-belt in N is ________
  • a) 166.55 N
  • b) 233.78 N
  • c) 120.06 N
  • d) 211.23 N
Q.7
A V-belt operates at 23.m/s peripheral speed. The mass of the belt per unit length is 0.9 kg/m. The value of centrifugal tension is _______
  • a) 514 N
  • b) 523 N
  • c) 500 N
  • d) 599 N
Q.8
Determine the length of cross-belt of connecting two pulleys 4 m apart. The diameters of driving and driven pulleys are 1.m and 0.m respectively.
  • a) 12.36 m
  • b) 11.35 m
  • c) 14.28 m
  • d) 13.27 m
Q.9
A leather beltmm wide andmm thick with a safe permissible stress of 1.5 MPa is used for transmitting a maximum power ofKW. If the density of belt material is 1 g/cmthe velocity of belt for maximum power transmission will be ________
  • a) 22.36 m/s
  • b) 34.13 m/s
  • c) 24.98 m/s
  • d) 12.12 m/s
0 h : 0 m : 1 s