National Level Quiz On Machine Design
National Level Quiz On Machine Design Organized by P.R. Pote Patil , College of Engineering & Management , Amaravati , Maharashtra .
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Here You can sell all the questions and answers which are asked in this quiz competition
1. The piston rod and the cross head in a steam engine are usually connected by means of
Cotter joint
Knuckle joint
Ball joint
Universal joint
2. How can shock absorbing capacity of a bolt be increased?
(a)By tightening it property
(b) By increasing the shank diameter
(c) By grinding the shank
(d) By making the shank diameter equal to the core diameter of thread
3. Total slip will Occur in a belt drive when
(a) Angle of rest is zero
(b) Angle of creep is zero
(c) Angle of rest is greater than angle of creep
(d) Angle of creep is greater than angle of rest
4. The ratio of tension on the tight side to that on the slack side in a flat belt drive is
(a) Proportional to the product of coefficient of friction and lap angle
(b) An exponential function of the product of coefficient of friction and lap angle.
(c) Proportional to the lap angle
(d) Proportional to the coefficient of friction
5. On the motors with low starting torque, the type of the clutch to be used is
(a) Multiple-plate clutch
(b) Cone clutch
(c) Centrifugal clutch
(d) Single-plate clutch with both sideseffective
6. When two concentric coil springs made of the same material, having same length and compressed equally by an axial load, the load shared by the two springs will be ............ to the square of the diameters of the wires of the two springs.
(a) directly proportional
(b) inversely proportional
(c) equal to
7. In a thick cylindrical shell, the maximum radial stress at the outer surfaces of the shell is
(a) zero
(b) p
(c) – p
(d) 2p
8. A cotter joint is used to transmit
(a) axial tensile load only
(b) axial compressive load only
(c) combined axial and twisting loads
(d) axial tensile or compressive loads
9. The type of stresses developed in the key is/are
(a) shear stress alone
(b) bearing stress alone
(c) both shear and bearing stresses
(d) shearing, bearing and bending stresses
10. Oldham coupling is used to connect two shafts
(a) which are perfectly aligned
(b) which are not in exact alignment
(c) which have lateral misalignment
(d) whose axes intersect at a small angle
11. The transverse fillet welded joints are designed for
(a) tensile strength
(b) compressive strength
(c) bending strength
(d) shear strength
12. The parallel fillet welded joint is designed for
(a) tensile strength
(b) compressive strength
(c) bending strength
(d) shear strength
13. When a nut is tightened by placing a washer below it, the bolt will be subjected to
(a) tensile stress
(b) compressive stress
(c) shear stress
(d) none of these
14. Screws used for power transmission should have
(a) low efficiency
(b) high efficiency
(c) very fine threads
(d) strong teeth
15. A screw is said to be self locking screw, if its efficiency is
(a) less than 50%
(b) more than 50%
(c) equal to 50%
(d) none of these
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