Which of the following bearings cannot take radial loads?
a) Taper roller bearing
b) Thrust ball bearing
c) Angular contact bearing
d) Deep groove ball bearing
Q.2.
Which of the following theory of failure is mostly used for ductile materials?
a) Maximum principal stress theory
b) Maximum shear stress theory
c) Distortion energy theory
d) Haigh’s theory
Q.3.
Which of the following forms of thread can transmit power in only one direction?
a) Acme threads
b) Trapezoidal threads
c) Square threads
d) Buttress threads
Q.4.
Which of the following line is the safest?
a) Goodman line
b) Soderberg line
c) Gerber parabola
d) Lagrange line
Q.5.
Which of the following type of failures does modified goodman line combines?
a) Fatigue and yield
b) Bending and fatigue
c) Yield and bending
d) Fatigue, bending and yield
Q.6.
Which of the following mechanical devices transfers or multiplies load with an application of small effort?
a) Gears
b) Shafts
c) Levers
d) Bearings
Q.7.
Which of the following coupling consists of only sleeve and a key?
a) Muff coupling
b) Flexible coupling
c) Rigid coupling
d) Universal coupling
Q.8.
Which of the following in power screws is the correct equation for torque if the load is lowered while designing a machine? ( W: Weight in N, θ: Angle of inclination, ϕ: Friction angle)
a) W tan (θ / ϕ)
b) W tan (θ x ϕ)
c) W tan (θ + ϕ)
d) W tan (θ – ϕ)
Q.9.
Which of the following is a dominance of power screw?
a) Large load carrying capacity
b) High efficiency
c) Wear of screw is reduced
d) Mechanical advantage is lowered
Q.10.
What is the maximum shear stress for a material of ultimate tensile strength (Sut) with keyway effect according to ASME code?
a) 0.18 Sut
b) 0.135 Sut
c) 0.30 Sut
d) 0.225 Sut
Q.11.
Which of the following elements transfers torque and is only subjected with the bending moment?
a) Brake
b) Clutch
c) Axle
d) Belt drive
Q.12.
Which of the following joins two rotating shafts to each other?
a) Key
b) Coupling
c) Gear
d) Belt drive
Q.13.
Which of the following line is the most economical?
a) Goodman line
b) Soderberg line
c) Gerber parabola
d) Lagrange line
Q.14.
Which of the following expression is not correct for designing a shaft according to rigidity?
a) T = GθJ / L
b) J = TL / Gθ
c) θ = TL / GJ
d) L = GθT / J
Q.15.
In machine design, which type of welding uses an oxygen-acetlyene gas?
a) Thermit welding
b) Electric arc welding
c) Gas welding
d) Forge welding
Q.16.
Which of the following is not a type of transmission shaft?
a) Crankshaft
b) Countershaft
c) Transmission shaft
d) Line shaft
Q.17.
In machine design, which of the following is not true for rigid and flexible couplings?
a) Rigid couplings are expensive than flexible couplings
b) Flexible couplings can tolerate any slight misalignment between axes of shafts
c) Flexible couplings can absorb shocks and vibrations
d) Rigid couplings cannot tolerate slight misalignment between axes of shafts
Q.18.
Which is not a possible type of failure in a riveted joint?
a) Crushing failure of the plate
b) Shear failure of rivet
c) Tensile failure of the plate between rivets
d) Shear failure of plate
Q.19.
Which of the following is true about the roller bearing in comparison with ball bearing?
a) Power lost in friction is more
b) Axial dimensions are less
c) Radial dimensions are more
d) They have point contact
Q.20.
Which of the following correctly symbolizes a fillet joint?
a) A right angled triangle
b) Two parallel lines with an arc above them
c) A triangle with an arc above it
d) A triangle
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.