MCQs: A pair of straight bevel gears consists of 16 pinion teeth and 42 gear teeth. What are the pitch cone angles of pinion and gear? 67.60° & 32.4°?
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MCQs: What is the frictional torque acting on a cylindrical roller bearing of 50 mm diameter which is subjected to radial load of 30 kN and has coefficient of friction 0.0011?
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MCQs: A cylindrical roller bearing is subjected to frictional torque of 500 N-mm. What is the approximate power loss if the shaft rotates at 1500 r.p.m?
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MCQs: The expected rating life of roller bearings rotating at 1000 r.p.m. is 30000 hours and equivalent dynamic load of 4000 N acts on it. What is the basic dynamic capacity of the bearing?
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MCQs: What is the effect of large diametral quotient on worm and worm wheel?
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MCQs: A standard worm gear pair is designated as 4/40/10/8, what does number 10 in it indicate?
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MCQs: A worm gear pair is designated as 1/30/10/8. What is the face width of the worm gear?
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MCQs: Which of the following belts is used when axes of two shafts are perpendicular and intersecting?
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MCQs: Friction ply used in multiple-ply belts is made of ___________
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MCQs: 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)
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MCQs: 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?
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MCQs: What is the shear stress in fluid per unit velocity gradient called as?
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MCQs: Which of the following is not a property of lubricants?
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MCQs: Mass of ___________ required to neutralize one gram of lubricating oil is called as neutralization number.
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MCQs: Which of the following gear tooth failures is/are induced when maximum Hertz contact stress on gear tooth surface exceeds surface endurance strength of tooth?
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MCQs: What is Scuffing?
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MCQs: Angle made by ________ with axis of rotation is called as helix angle.
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MCQs: What is the minimum face width required for a helical gear which has helix angle of 23° and normal module of 7?
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MCQs: To avoid interference the minimum number of teeth required on helical pinion decreases as helix angle ________
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MCQs: Which of the following statements is/are true?
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