Strength of Materials

271. The stress in the wall of a cylinder in a direction normal to its longitudinal axis, due to a force acting along the circumference, is known as

1. Yield stress
2. Longitudinal stress
3. Hoop stress
4. Circumferential stress

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272. The stress necessary to initiate yielding, is considerably

1. More than that necessary to continue it
2. Less than that necessary to continue it
3. More than that necessary to stop it
4. Less than that necessary to stop it

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273. The tensile force required to cause an elongation of 0.045 mm in a steel rod of 1000 mm length and 12 mm diameter, is (where E = 2 × 10⁶ kg/cm²)

1. 166 kg
2. 102 kg
3. 204 kg
4. 74 kg

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274. The tension coefficient of any member is

1. Force divided by the length
2. Tension divided by the length
3. Tension per unit area
4. Tension in the member

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275. The type of butt joints in common use, is:

1. Single inverted V-butt joint
2. Double V-butt joint
3. Double U-butt joint
4. Single V-butt joint

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276. The under mentioned type is simple strain

1. Tensile strain
2. Compressive strain
3. Shear strain
4. All the above

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277. The unit of force in S.I. units is

1. Kilogram
2. Newton
3. Watt
4. Dyne

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278. The unit of power in S.I. units is

1. Newton meter
2. Watt
3. Joule
4. Kilogram meter/sec

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279. The unit of work or energy in S.I. units is

1. Newton
2. Pascal
3. Kilogram meter
4. Joule

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280. The units of moment of inertia of an area are

1. kg m²
2. m⁴
3. kg/m²
4. m³

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