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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MCQs: A bevel gear has pitch circle diameters of pinion and gear as 20 mm and 40 mm respectively. What is the face width of bevel gear? (m =module)
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MCQs: What is the pitch line velocity if pinion has pitch circle diameter of 35 mm and rotates at 1000 r.p.m transmitting power of 250 kW to the gear?
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MCQs: A bevel gear made of steel pinion and steel gear has dynamic factor C equal to __________
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MCQs: A straight bevel gear is manufactured by cutting process and maximum tangential force of 12000 N acts on it. What is the effective load acting between meshing teeth if pitch line velocity is 130 m/s?
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MCQs: A deep groove ball bearing rotating at 1200 r.p.m. is subjected to radial and an axial force of 2000 N and 1500 N respectively. What will be the basic dynamic capacity of bearing if 20,000 hours is the rating life? (Consider radial factor = 0.55, Thrust factor = 2 & application factor = 1.5?
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MCQs: Load acting on bearing in its plane of rotation is called as __________
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MCQs: Which of the following elements is not used as a roller in roller bearings?
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MCQs: Which of the following bearings carry thrust load in one direction?
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MCQs: A cylindrical roller bearing is subjected to radial force of 4500 N and application factor 1.3. What is the equivalent dynamic load acting on bearing if it has 90% reliability with desired life of 10000 hrs?
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MCQs: A worm gear pair has 2 starts on worm thread, 11.2 as diametral quotient, 2 as module and 38 number of teeth on worm gear. How is the gear pair designated with these specifications?
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MCQs: What is the shortest distance between worm gear and axes of the worm for a worm gear pair designated as 2/40/10/8?
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MCQs: If pressure angle is 22° and coefficient of friction is 0.05. What is the axial force acting on the worm gear designated as 1/40/10/5, if tangential force of 1200 N acts on it?
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