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1.
Which of the following is not a property of lubricants?
2.
What is the S.I unit of kinematic viscosity?
3.
What is the shear stress in fluid per unit velocity gradient called as?
4.
A flat belt pulley has centre distance between two pulleys as 1000 mm. If diameters of two pulleys are 600 mm and 300 mm, what is the length of belt?
5.
A flat belt transmits power of 20 kW when the velocity of the belt is 30 m/s. What will be the initial tension in the belt if 230 N is the centrifugal tension in the belt and F1 / F2 =2.5?
6.
Two pulleys of an open belt drive A and B transmit power of 100 kW from pulley A running at 1000 r.p.m to pulley B at 500 r.p.m. If diameter of pulley A is 150 mm and 3% is the slip at operating conditions then what is the diameter of pulley B? (Assume thickness of belt = 12 mm)
7.
Friction ply used in multiple-ply belts is made of ___________
8.
Which of the following belts is used when axes of two shafts are perpendicular and intersecting?
9.
A worm gear pair is designated as 1/30/10/8. What is the face width of the worm gear?
10.
A standard worm gear pair is designated as 4/40/10/8, what does number 10 in it indicate?