Design Against Static Load Multiple Choice Questions - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. A cotter joint is used to transmit
(A) Axial tensile force only
(B) Axial tensile or compressive force
(C) Axial compressive force only
(D) Combined bending and torsional moment

2. A knuckle joint is used to transmit
(A) Axial tensile force only
(B) Axial tensile or compressive force
(C) Axial compressive force only
(D) Combined bending and torsional moment

3. In levers,
(A) Mechanical advantage is more than leverage
(B) Mechanical advantage is less than leverage
(C) Mechanical advantage is equal to leverage
(D) None of the above

4. The bell crank lever in centrifugal governor is
(A) First type of lever
(B) Second type of lever
(C) Third type of lever
(D) None of the above

5. Coulomb, Tresca and Guest’s theory of failure is applicable to
(A) Ductile materials
(B) Composites
(C) Brittle materials
(D) Non-metals

6. For maximum principal stress theory, the shape of the region of safety on Ïƒ1, Ïƒ2 co-ordinate system is
(A) Square
(B) Hexagon
(C) Ellipse
(D) Circle

7. Fracture mechanics is the science of
(A) Predicting the influence of cracks on fatigue fracture of components
(B) Predicting the influence of cracks on brittle fracture of components
(C) Predicting the influence of cracks on ductile fracture of components
(D) None of the above

8. The ratio of shear stress to shear strain is called
(A) Bulk modulus
(B) Poisson’s ratio
(C) Modulus of rigidity
(D) Modulus of elasticity

9. A shaft is transmitting torque Mt and made of material having (t) as permissible shear stress. The diameter of shaft d is given by,
(A) (16Mt / Ï€Ï„)
(B) (32Mt / Ï€Ï„)
(C) (64Mt / Ï€Ï„)
(D) (16Mt / Ï„)

10. The modulus of elasticity of grey cast iron is
(A) 2,07,000 N/mm2
(B) 1,00,000 N/mm2
(C) 50,000 N/mm2
(D) 80,000 N/mm2

11. The polar moment of inertia of a hollow shaft, with do and di as outer and inner diameters respectively, is given by,
(A) Ï€ (d04 - di4)/32
(B) Ï€ (d03 - di3)/32
(C) Ï€ (d02 - di2)/32
(D) Ï€ (d04 - di4)/16

12. The joint between the piston rod and the cross head of steam engine is
(A) Knuckle joint
(B) Universal joint
(C) Cotter joint
(D) Key joint

13. The modulus of elasticity of carbon steel is
(A) 2,07,000 N/mm2
(B) 1,00,000 N/mm2
(C) 50,000 N/mm2
(D) 80,000 N/mm2

14. The residual stresses are caused due to
(A) Manufacturing methods like forging
(B) Machining methods like milling or grinding
(C) Cold working processes like rolling and extrusion
(D) Any one of the above

15. In ‘third’ type of levers, mechanical advantage is
(A) Less than one
(B) More than one
(C) Equal to one
(D) Any one of the above

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