Design Against Static Load Computerized Practice Test - Set 03 - ObjectiveBooks

# Practice Test: Question Set - 03

1. The cross-section of lever is subjected to
(A) Torsional moment
(B) Axial tensile force
(C) Bending moment
(D) Axial compressive force

2. For maximum shear stress theory, the shape of the region of safety on σ1, σ2 co-ordinate system is
(A) Square
(B) Hexagon
(C) Ellipse
(D) Circle

3. When a circular shaft is subjected to torque, the torsional shear stress is
(A) Directly proportional to the distance from the axis
(B) Inversely proportional to the distance from the axis
(C) Proportional to the square of the distance from the axis
(D) Constant throughout the cross-section

4. The factor of safety for carbon steel component, subjected to static force, is usually
(A) 1.5 to 2
(B) 3 to 5
(C) 1.3 to 1.5
(D) 5 to 10

5. The pin in knuckle joint is subjected to
(A) Double shear stress
(B) Torsional shear stress
(C) Axial tensile stress
(D) Axial compressive stress

6. The Poisson’s ratio of grey cast iron is
(A) 0.40
(B) 0.29
(C) 0.21
(D) 0.75

7. Griffiths’ law states that fracture strength of brittle material is
(A) Directly proportional to the square root of the crack length
(B) Inversely proportional to the square root of the crack length
(C) Directly proportional to the square of the crack length
(D) Inversely proportional to the square of the crack length

8. Rankine’s theory of failure is applicable to
(A) Ductile materials
(B) Elastic materials
(C) Brittle materials
(D) Plastic materials

9. The rocker arm in internal combustion engine is
(A) First type of lever
(B) Second type of lever
(C) Third type of lever
(D) None of the above

10. In lever terminology, ‘leverage’ is the ratio of
(C) Load arm to effort arm
(D) Effort arm to load arm

11. The torque transmitting capacity of a shaft of diameter d and made of material having (t) as permissible shear stress is,
(A) πd3τ
(B) (π/16) d3τ
(C) (π/32) d3τ
(D) (π/16) d4τ

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

13. According to maximum shear stress theory of failure, the relationship between yield strength in shear (Ssy) and tensile yield strength (Syt) is
(A) Ssy = 0.5 Syt
(B) Ssy = 0.577 Syt
(C) Ssy = 0.75 Syt
(D) Ssy = 0.4 Syt

14. The Poisson’s ratio of carbon steels is
(A) 0.40
(B) 0.29
(C) 0.21
(D) 0.75

15. The thermal stresses are caused due to
(A) Variation in temperature
(B) High temperatures
(C) Specific heat
(D) Latent heat

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