B.TechSemester 62022-23Machine DesignKME-602
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Machine Design (KME-602) - AKTU Question Paper 2022-23

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Machine Design Previous Year Question Paper for B.Tech Semester 6, academic session 2022-23. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 6
Session:2022-23
University:AKTU / UPTU

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Questions Asked in 2022-23

Machine Design (KME-602) — complete question paper

Section AAttempt all questions in brief. 2 x 10 = 20
  • a
    Define Notch Sensitivity and its significance
  • b
    Define principal stress and principal plane
  • c
    Differentiate between chalking and fullering
  • d
    If the tearing efficiency of a riveted joint is 60% , find the ratio of diameter of rivet hole to the pitch of rivets
  • e
    Discuss the advantages and disadvantages of Helical gear
  • f
    Define pressure angle for the gear
  • g
    Define “static load rating” of rolling contact bear ing
  • h
    A self-aligning ball bearing has a basic dynamic lo ad rating C= 35 kN. If the equivalent radial load on the bearing is 45 kN, cal culate the expected L10 life in millions of revolution. (i) Differentiate between dry liner and wet liner (j) Discuss advantages of clutch over coupling
Section BAttempt any three of the following: 10x3=30
  • a
    Explain the design procedure in brief. A flat bar a s shown in figure is subjected to an axial load pf 50 KN. if the stress in the bar is to be limited 100N/m 2. Determine the thickness of the bar considering stress concentration
  • b
    A plate 75 mm wide and 12.5 mm thick is joined with another plate by a singletransverse weld and a double parallel fillet weld as shown in Fig. . The maximum tensile and shear stresses are 70 MPa and56 MPa respectively.Find the length of each parallel fillet weld
  • c
    Define law of gearing and derive the condition for which t he law of gear holds good
  • d
    The radial load acting on a ball bearing 2500N for the 1/3 tim es of itslife and 1500 N for rest of the life. The rated life of the bearing is 20 millionrevolution. Determine the dynamic load capacity of the bearing
  • e
    A plate clutch having a single driving plate wi th contact surfaces on each side is required to transmit 110 kW at 1250 r.p.m. The oute r diameter of the contact surfaces is to be 300 mm. The coefficient of fricti on is 0.4. (a) Assuming a uniform pressure of 0.17 N/mm 2; determine the inner diameter of the friction surfaces. (b) Assuming the same dimensions and the same total axial thrust, determine the maximum torque that can be transmitte d and the maximum intensity of pressure when uniform wear conditions have been reached
Section CAttempt any one part of the following: 10x1=10
  • a
    A C frame subjected to a load of 15 KN is shown in figure .it is made of gray cast iron FG300. If the factor of safety is 2.5, de termine the dimension of cross- section of the frame
  • b
    A machine component is subjected to a flexural stre ss which fluctuates between + 300 MN/m2 and – 150 MN/m2. Determine the value of minimum ultimate strength according to 1. Modified Goodman relation; and 2. Soderberg relation. Take yield strength = 0.55 Ultimate strength; Endurance strength = 0.5 Ultimate strength; and factor of safety = 2
  • a
    A bracket in the form of a plate is fitted to a col umn by means of four rivets A, B, C and D in the same vertical line, as shown in F ig. 9.33. AB = BC = CD = 60 mm. E is the mid-point of BC. A load of 100 kN i s applied to the bracket at
  • a
    point F which is at a horizontal distance of 150 m from E. The load acts at an angle of 30° to the horizontal. Determine the diame ter of the rivets which are made of steel having a yield stress in shear of 240 MPa. Take a factor of safety
  • b
    A pully is mounted on ashaft midway between two bea rings. The bending moment varies from 200 KN –mm to 600 KN –mm and tor sionalmoment varies from 60 KN –mm to180 KN –mm. the shaft mater ial has ultimate strength of 550 MPa and yield strength 400MPa. If t he factor of safety is 1.5 and the stress concentration for key way in the pul ly in bending and torsion are 1.5 and 1.2 respectively, determine the shaft diame ter and also design the rectangular key for the shaft
  • a
    A gear drive is required to transmit a maximum power of 22.5 kW. The velocity ratio is 1:2 and r.p.m. of the pinion is 200. The approximate center distance between the shafts maybe taken as 600 mm. The teeth have 20° stub involute profiles. The static stress for the gear material(which is cast iron) may be taken as 60 MPa and face width as 10 times the module. Find the module,face width and number of teeth on each gear From static strength considerations and check the gears for wear
  • b
    A helical cast steel gear with 30° helix angle has to transmit 35 kW at 1500r.p.m. If the gear has 24 teeth, determine the necessary module, pitch diameter and face width for 20°full depth tee th. The static stress for cast steel may be taken as 56 MPa. The width of face may betaken as 3 times the normal pitch. What would be the end thrust on the gear?
  • a
    Design a journal bearing for a centrifugal pump fro m the following data
    : Load on the journal = 20 000 N; Speed of the jour nal = 900 r.p.m.;
Type of oil is SAE 10, for which the absolute visco sity at 55°C = 0.017
kg / m-s; Ambient temperature of oil = 15.5°C ; Max imum bearing
pressure for the pump = 1.5 N / mm2. Calculate also  mass of the
lubricating oil required for artificial cooling, if  rise of temperature of oil
be limited to 10°C. Heat dissipation coefficient = 1232 W/m2/°C
  • b
    Select the suitable bearing rolling contact bearing for the following application: • Shaft diameter=50mm • Speed=600 RPM • Radial load Fr=2KN • Axial load Fa=0.5 KN • Required life with 95% reliability=12000 hr. • Operating temp=45oC Rotating Race= Inner
  • a
    A four -stroke diesel engine has the following specifications: Brake power = 5 kW; Speed = 1200 r.p.m. ; Indicated mean effective pressure = 0.35 N / mm2; Mechanical efficiency = 80 %. Deter mine: 1. bore and length of the cylinder; 2. thickness of the cylinde r head ; and 3. size of studs for the cylinder head
  • b
    Design a cast iron piston for a sing le acting four stroke engine for the
    following data: Cylinder bore=100mm; Stroke=125mm; Maximum gas
pressure = 5N/mm 2; Indicated mean effective pressure = 0.75N/mm 2;
Mechanical efficiency = 80%; Fuel consumption = 0.1 5 kg per brake
power per hour; Higher calorific value of fuel = 42 ×103kJ/kg; speed =
2000 r.p.m. Any other data required for the design may be assumed.
Thermal conductivity for C.I is 46 J/sec. m oC and   allowable
temperature difference is 222 oC

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

Repeated Questions — KME-602

Questions that appeared in more than one session, found by comparing 2 years of Machine Design papers (2021-22, 2022-23)

2x

Define pressure angle for the gear

Appeared in: 2021-22 · 2022-23

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