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Home » GAT Subject » Aptitude Test - 51
Hassan
1.The ratio of axial deformation to the original length of the body is known as
A. Poisson’s ratio
B. Linear Strain
C. Linear stress
D. Poisson’s ratio
2.The stress induced in a body, when subjected to two equal and opposite forces which are acting tangentially across the section is known as
A. Bending stress
B. Shear stress
C. Tensile stress
D. Bending stress
3.A plane element is subjected to a shearing stresses of 50MPa. The principal stresses existing in this element and the directions of the planes on which they occur would be _____ at ______ respectively
A. 7 MPa at 90°
B. 7 MPa at 45°
C. 50 MPa at 90°
D. 7 MPa at 90°
4.If longitudinal strain is tensile, the lateral strain will be ___
A. not determined
B. zero
C. compressive
D. not determined
5.The ratio of ultimate stress to the permissible stress is called ___
A. Load factor
B. Stress factor
C. Design factor
D. Load factor
6.The ratio of maximum bending stress to maximum shear stress on the cross-section when a shaft is simultaneously subjected to torque T and bending moment M is
A. 2M/T
B. 2T/M
C. M/T
D. 2M/T
7.Complimentary shear stresses are the shear stresses acting on a set of planes which are
A. orthogonal to each other
B. at an angle of 45° to each other
C. having maximum normal stress
D. orthogonal to each other
8.Modulus of elasticity (E) is defined in terms of bulk modulus (K) and Poisson’s ratio (1/m) as
A. 3K [1-(m/2)]
B. 3K [1-(2/m)]
C. 3K [1-(1/m)]
D. 3K [1-(m/2)]
9.Ratio of maximum shear stress to average shear stress is 4/3 in a ___ section.
A. hexagonal
B. circular
C. triangular
D. hexagonal
10.Poisson’s ratio is defined as the ratio of
A. lateral strain to longitudinal strain
B. lateral stress to longitudinal stress
C. longitudinal strain to lateral strain
D. lateral strain to longitudinal strain
11.Maximum shear stress by Mohr’s circle will be equal to
A. Distance between origin and farthest point of circle on X-axis
B. Distance between origin and nearest point of circle on X-axis
C. Its radius
D. Distance between origin and farthest point of circle on X-axis
12.Normal stress on an oblique plane inclined at angle 45° to the axis of a bar of square cross-section of side S when acted upon by a tensile force P is
A. P/4S2
B. P/2S2
C. 2P/S2
D. P/4S2
13.In case of aluminium, yield strength is defined by _______.
A. Normal Method
B. Offset method
C. Secant method
D. Normal Method
14.If a body is acted upon by pure shear stresses on two perpendicular planes, the planes inclined at 45° are subjected to no ________ stress.
A. bending
B. shear
C. compressive
D. bending
15.Brittle materials are characterized by _______.
A. Strain at the time of rupture is very small.
B. No difference between ultimate strength and breaking strength.
C. Rupture occurs without any noticeable change in rate of elongation.
D. Strain at the time of rupture is very small.
16.Modulus of Rigidity G can be expressed in usual notations as
A. 2E / (1 – μ)
B. 2E / (1 + μ)
C. E / 2(1 + 2μ)
D. 2E / (1 – μ)
17.Under uniaxial loading, the maximum shear stress is ____________ times the uniaxial stress
A. 3
B. 1.5
C. 2
D. 3
18. The wall of Rhizopus hypha is composed of
A. Cellulose
B. Chitin
C. Pectin
D. Cellulose
19.The mode of nutrition of Rhizopus, Yeast and Penicillium is
A. Parasitic
B. Saprophytic
C. Symbiotic
D. Parasitic
20.The hyphae of Rhizopus are
A. Unbranched, aseptate and uninucleate
B. Branched, septate and uninucleate
C. Unbranched, aseptate and multinucleate
D. Unbranched, aseptate and uninucleate
21.The branches of conidiophores of Penicillium end in conidia bearing bottle shaped structures which are called
A. Metulae
B. Sterigmata
C. Paraphyses
D. Metulae
22.Thread like filaments which form the plant body of fungi are
A. Rhizoids
B. Paraphyses
C. Hyphae
D. Rhizoids
23.Yeast like budding of Oidia in Mucor/Rhizopus is called
A. Palmella
B. Chantransia
C. Torula
D. Palmella
24. The common mode of reproduction in Rhizopus is by
A. Sporangiospores
B. Oidia
C. Plasmospores
D. Sporangiospores
25.The gametes in Rhizopus develop in specially formed cells known as
A. Suspensor cell
B. Progametangia
C. Gametangia
D. Suspensor cell
26.Thick walled asexual spored formed by Rhizopus, are
A. Aplansopores
B. Akinetes
C. Plasmospores
D. Aplansopores
27.Root rot of Sweet Potato is caused by
A. Mucor mucedo
B. Rhizopus oryzae
C. Rhizopus stolonifer
D. Mucor mucedo
28.Which of the following is a good example of heterothallism
A. Spirogyra
B. Rhizopus
C. Pinus
D. Spirogyra
29.The zygospore of Rhizopus contains much amount of fat globules. It is thick walled and the color is
A. Green
B. White
C. Grey
D. Green
30.The cell wall of yeast is composed of
A. Cellulose
B. Pectose
C. Pectin
D. Cellulose
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