A steel bar of 2 m length is fixed at both ends at 20°C. The coefficient of thermal expansion is 11 x 10-6/°C and the modulus of the elasticity is 2 x 106 kg/cm2. If the temperature is changed to 18°C, then the bar will be experience a stress of-A-22 kg/cm2 (tensile)B-22 kg/cm2 (compressive)C-44 kg/cm2 (compressive)D-44 kg/cm2 (tensile)-C-44 kg/cm2 (compressive)

Question

A steel bar of 2 m length is fixed at both ends at 20&deg;C. The coefficient of thermal expansion is 11 x 10-6/&deg;C and the modulus of the elasticity is 2 x 106 kg/cm2. If the temperature is changed to 18&deg;C, then the bar will be experience a stress of-A-22 kg/cm2 (tensile)B-22 kg/cm2 (compressive)C-44 kg/cm2 (compressive)D-44 kg/cm2 (tensile)-C-44 kg/cm2 (compressive)

APTITUDE CRACK · Accepted Answer

The correct option is  C 44 kg/cm2 (compressive) Option D is correct. Compression in the free bar but, due to fixed conditions it will experience opposite stress which is tensile.

UPSC Civil Service Exam Questions

Q1: A steel bar of 2 m length is fixed at both ends at 20°C. The coefficient of thermal expansion is 11 x 10^-6/°C and the modulus of the elasticity is 2 x 10⁶ kg/cm². If the temperature is changed to 18°C, then the bar will be experience a stress of

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UPSC Civil Service Exam Questions

Q1: A steel bar of 2 m length is fixed at both ends at 20°C. The coefficient of thermal expansion is 11 x 10-6/°C and the modulus of the elasticity is 2 x 106 kg/cm2. If the temperature is changed to 18°C, then the bar will be experience a stress of

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Q1: A steel bar of 2 m length is fixed at both ends at 20°C. The coefficient of thermal expansion is 11 x 10^-6/°C and the modulus of the elasticity is 2 x 10⁶ kg/cm². If the temperature is changed to 18°C, then the bar will be experience a stress of

For help Students Orientation
Mcqs Questions