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Hassan
1. The price elasticity of demand equals
A. the percentage change in the quantity demanded divided by the percentage change in the price.
B. the change in the quantity demanded divided by the change in price
C. the percentage change in the price divided by the percentage change in the quantity demanded
D. the percentage change in the quantity demanded divided by the percentage change in the price.
2. A 10 percent increase in the quantity of spinach demanded results from a 20 percent decline in its price. The price elasticity of demand for spinach is
A. 0.5
B. 20.0
C. 2.0
D. 0.5
3.A 20 percent increase in the quantity of pizza demanded results from a 10 percent decline in its price. The price elasticity of demand for pizza is
A. 2.0
B. 10.0
C. 0.5
D. 2.0
4.Suppose a rise in the price of peaches from $5.50 to $6.50 per bushel decreases the quantity demanded from 12,500 to 11,500 bushels. The price elasticity of demand is
A. 0.5
B. 1000.0
C. 2.0
D. 0.5
5. A fall in the price of lemons from $10.50 to $9.50 per bushel increases the quantity demanded from 19,200 to 20,800 bushels. The price elasticity of demand is
A. 1.25
B. 1.20
C. 8.00
D. 1.25
6. A fall in the price of cabbage from $10.50 to $9.50 per bushel increases the quantity demanded from 18,800 to 21,200 bushels. The price elasticity of demand is
A. 1.20
B. 0.80
C. 8.00
D. 1.20
7.Stress is
A. External force
B. Internal resistive force
C. Axial force
D. External force
8.Following are the basic types of stress except
A. Tensile stress
B. Compressive stress
C. Shear stress
D. Tensile stress
9.Which of the following is not a basic type of strain?
A. Compressive strain
B. Shear strain
C. Area strain
D. Compressive strain
10.Tensile Strain is
A. Increase in length / original length
B. Decrease in length / original length
C. Change in volume / original volume
D. Increase in length / original length
11.Compressive Strain is
A. Increase in length / original length
B. Decrease in length / original length
C. Change in volume / original volume
D. Increase in length / original length
12.Volumetric Strain is
A. Increase in length / original length
B. Decrease in length / original length
C. Change in volume / original volume
D. Increase in length / original length
13.Hooke’s law is applicable within
A. Elastic limit
B. Plastic limit
C. Fracture point
D. Elastic limit
14.Young’s Modulus of elasticity is
A. Tensile stress / Tensile strain
B. Shear stress / Shear strain
C. Tensile stress / Shear strain
D. Tensile stress / Tensile strain
15.Modulus of rigidity is
A. Tensile stress / Tensile strain
B. Shear stress / Shear strain
C. Tensile stress / Shear strain
D. Tensile stress / Tensile strain
16.Bulk modulus of elasticity is
A. Tensile stress / Tensile strain
B. Shear stress / Shear strain
C. Tensile stress / Shear strain
D. Tensile stress / Tensile strain
17.Factor of safety is
A. Tensile stress / Permissible stress
B. Compressive stress / Ultimate stress
C. Ultimate stress / Permissible stress
D. Tensile stress / Permissible stress
18.Poisson’s ratio is
A. Lateral strain / Longitudinal strain
B. Shear strain / Lateral strain
C. Longitudinal strain / Lateral strain
D. Lateral strain / Longitudinal strain
19.A rod, 120cm long and of diameter 3.0 cm is subjected to an axial pull of 18 kN. The stress in N/mm2 is.
A. 22.57
B. 23.47
C. 24.57
D. 22.57
20.The total extension in a bar, consists of 3 bars of same material, of varying sections is
A. P/E(L1/A1+L2/A2+L3/A3)
B. P/E(L1A1+L2A2+L3A3)
C. PE(L1/A1+L2/A2+L3/A3)
D. P/E(L1/A1+L2/A2+L3/A3)
21.The relationship between Young’s modulus (E), Bulk modulus (K) and Poisson’s ratio (µ) is given by
A. E=2K(1-2µ)
B. E=3K(1-2µ)
C. E=2K(1-2µ)
D. E=2K(1-2µ)
22.The relationship between Young’s modulus (E), Modulus of rigidity (C) and Bulk modulus (K) is given by
A. E=9CK/(C+3K)
B. E=9CK/(2C+3K)
C. E=9CK/(3C+K)
D. E=9CK/(C+3K)
23.The total extension of a taper rod of length ‘L’ and end diameters ‘D1’ and ‘D2’, subjected to a load (P), is given of
A. 4PL/ΠE. D1D2
B. 3PL/ΠE. D1D2
C. 2PL/ΠE. D1D2
D. 4PL/ΠE. D1D2
24.A rod 3 m long is heated from 10°C to 90°C. Find the expansion of rod. Take Young’s modulus = 1.0 x 10^5 MN/m2 and coefficient of thermal expansion = 0.000012 per degree centigrade.
A. 0.168 cm
B. 0.208 cm
C. 0.288 cm
D. 0.168 cm
25.Elongation of a bar of uniform cross section of length ‘L’, due to its own weight ‘W’ is given by
A. 2WL/E
B. WL/E
C. WL/2E
D. 2WL/E
26.Hooke’s law holds good up to____________________?
A. yield point
B. limit of proportionality
C. breaking point
D. yield point
27.Type of stress that causes dilation is known as
A. Hydrostatic stress
B. Deviatoric stress
C. Shear stress
D. Hydrostatic stress
28.The Bulk modulus (K) of a material having Young’s Modulus (E) = 200 GPa and Modulus of Rigidity (G) = 80 GPa is
A. 160 GPa
B. 250 GPa
C. 133.3 GPa
D. 160 GPa
29.The ratio of change of dimension of the body to the original dimension is known as
A. Pressure
B. Force
C. Stress
D. Pressure
30.The shearing stress in a piece of structural steel is 100 MPa. If the elastic modulus is 200 GPa and the Poisson’s ratio is 0.25, then the shearing strain γ would be
A. 800
B. 1.25
C. 0.8 rad
D. 800
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