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11
The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is
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Answer: Option C
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12
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is
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Answer: Option B
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13
Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are
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Answer: Option A
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14
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is
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Answer: Option B
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15
In order to double the period of simple pendulum, the length of the string should be
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Answer: Option C
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16
The impact between two lead spheres is approximately equal to an __________ impact.
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Answer: Option B
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17
The matter contained in a body, is called
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Answer: Option B
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18
The maximum efficiency of a screw jack is
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Answer: Option A
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19
Moment of inertia is the
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Answer: Option D
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20
The total motion possessed by a body, is called
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Answer: Option D
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