Mechanical JE AE ISRO Quiz
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Alloy steel containing 23 to 30% chromium with carbon less than 0.35% is known as……..
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24%
Shock-resistance steel
29%
Heat-resistance steel
9%
Magnet steel
38%
Stainless steel
In electrode holder, holding jaw made of
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46%
Copper alloy
20%
Stainless steel
28%
Cast iron
6%
None of the above
The deformation per unit length is called
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11%
Tensile stress
6%
Compressive stress
9%
Shear stress
74%
Strain
In a single V-butt welds, the angle between edges is kept about
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57%
40° to 60°
22%
70° to 90°
7%
10° to 20°
14%
20° to 40°
The lost motion of the spindle in micrometer screw gauge when the rotation of the thimble is changed in direction is referred to as -
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6%
Wear
33%
Least count
54%
Backlash
7%
Total error
What should be the size of weld in case of butt welded joint?
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31%
Twice the throat of weld
26%
Half of the throat of weld
40%
Equal to the throat of weld
2%
None of the above
97. The density of the brine solution can be measured with the aid of _______.
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67%
Hydrometer
12%
Tachometer
12%
Anemometer
8%
Barometer
89. Which fluid among the following fluid's has maximum surface tension ?
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12%
Water
9%
Kerosene
19%
Glycerine
60%
Mercury
92. The value of bulk modulus of elasticity ____ with increase in pressure.
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64%
Increases
28%
Decrease
5%
Either of the above
4%
None of the above
88. Mercury is a primary element in _____.
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15%
Emulsion
61%
Amalgam
11%
Haematic
14%
Magnaliums
93. What is the approximate freezing point of mercury ?
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18%
--30°C
44%
--33°C
25%
--39°C
13%
--29°C
85. The phenomenon by which a liquid (depending upon it's specific gravity) rises into a thin glass tube above or below it's general level is known as:-
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7%
Cohesion
11%
Adhesion
73%
Capillarity
10%
Surface tension
87. A ratio of the uniform pressure intensity to volumetric strain is called ?
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70%
Bulk modulus of elasticity
15%
Young's modulus of rigidity
9%
Poisson' s ratio
6%
Shear modulus
94. What is the density of a liquid whose dynamic viscosity is 0.18 centipoise and the kinematic viscosity is 9 centistokes ?
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19%
2 kg / meter cube
35%
20 kg / meter cube
37%
0.2 gm / cm cube
9%
20 gm / cm cube
84. A fluid's resistance to flow is viscosity. If there is a rise in temperature, the viscosity of the liquid :-
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10%
Increases
15%
First decreases and then increases
69%
Decreases
6%
First increases and then decreases
98. An oil of 2.5 litre weight 5 N at room temperature, the specific weight of the oil is ?
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25%
2 N / meter cube
42%
2 KN / meter cube
18%
0.08 N / meter cube
15%
12.5 N / meter cube