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Design Test: 30Questions in 10 minutes
Unit of stress & strain in MKS system
Unit of power in MKS System.
Unit of Viscosity? ans. Poise or centi-poise
Which type of transmission drive is Noiseless – (Belt drive/ Gear/ Chain)
Which type of gear gives less noise?(Worm / Helical / Spur)
Relation between speed & diameter.
Question in I = mK2
Which is more thick?( SWG10,SWG16,SWG20)
Which bearing can withstand both thrust & radial
Question in gear module m = PCD / z.
What type welding is used for Aluminum
Critical stress of column is proportional to
__________allowance is allowed in taper castings.
Toughness is a measure of….
Poisson’s ratio
Deflection of spring is predominantly due to____ a.Major dia b.Length c.minor dia d. spring index Ans. Choice D
17. What is the BM formula, diagram & Max.B.M for a simply supported beam with UDL
What is the process used to get soft core and hard case? Ans. Case Carburizing
By which process we get more hard and wear resistant surface? a. Nitriding b. Chrome plating
What is the formula for output power ans.2PNT/60000
Radius of gyration is proportional to….a. 1/m b. m c. sq. root of m/a d. sq.root of I/m Ans. d
Question in M/I=s/y=E/R relation
What is q in the relation T/J=t/R=Gq/L
How to increase the surface finish?
A. increase speed of workpiece B. Increase depth of cut C. Both ans. Choice C
Allowance given in casting is to accommodate taper….. ans. Distortion
Material for machine bed? Ans. CI
Material of aircraft wings? Ans. Aluminium
Based on which factor(s) we have to select a bearing? (Comp/ Fatigue strength/Both) Ans.Both
Modulus of elasticity? Ans. Stress/Strain
Material for spring?
Which of the following material has anisotropic property? Ans. Aluminium
Write down the formula for MI for a rectangle & a circle.
Shaft diameter depends on______________
Type of hardening to get good surface finish. (Cyaniding & Nitriding …)
How will you measure the Hardness of Rubber (Vickers / Brinell / ….)
What type of material is used for machine bed?
Which of the following is antistatic material?(MS / Steel / Brass / Al )
Interview Questions:
Explain abut Heat Treatment processes,( Case Carburizing, Nitriding …)
How will you select a bearing for Helical and Spur gear systems?
Properties of Bearing Materials
SF & Bending Moment diagram for all beams& Design of Beam for Bending Moment.
Is it possible to carburize all materials?
What is the formula for designing a shaft to transmit a given torque?
What is polar moment of inertia?
Stress strain relationship & Young modulus variation with respect to materials(Steel ..)
M / I = f / y = E / R & G/J= C θ / L Relations
Gear Design- Why we are designing pinion alone?(Ans: No of revolutions made by pinion is more)
Difference between Spur Gear & Helical Gear & Gear nomenclature.
Mohr’s Theory.
Single point cutting tool & Drill bit nomenclature
Machining processes.
Concentrate on Field of interst, project, In- plant training.
Also refer design of columns & beams, design of shafts, bearings for further questions and for the interview too
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