Question: During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is___________________?

• 1. 4 tonnes/cm2
• 2. 8 tonnes/cm2
• 3. 16 tonnes/cm2
• 4. 22 tonnes/cm2

Question: The intensity of stress which causes unit strain is called_______________?

• 1. unit stress
• 2. bulk modulus
• 3. modulus of rigidity
• 4. modulus of elasticity

Question: The Young’s modulus of a wire is defined as the stress which will increase the length of wire compared to its original length________________?

• 1. half
• 2. same amount
• 3. double
• 4. one-fourth

Question: If the radius of wire stretched by a load is doubled, then its Young’s modulus will be_______________?

• 1. doubled
• 2. halved
• 3. become four times
• 4. remain unaffected

Question: A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?

• 1. uniform throughout
• 2. increase uniformly
• 3. first increase and then decrease
• 4. increase uniformly first and then increase rapidly

Question: The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?

• 1. same
• 2. more
• 3. less
• 4. more or less depending on other factors

Question: Modulus of rigidity is defined as the ratio of_________________?

• 1. longitudinal stress and longitudinal strain
• 2. volumetric stress and volumetric strain
• 3. lateral stress and lateral strain
• 4. shear stress and shear strain

Question: It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?

• 1. internal resistanpe
• 2. tensile stress
• 3. transverse stress
• 4. compressive stress

Question: The unit of Young’s modulus is__________________?

• 1. mm/mm
• 2. kg/cm
• 3. kg
• 4. kg/cm2

Question: Hooke’s law holds good up to____________________?

• 1. yield point
• 2. limit of proportionality
• 3. breaking point
• 4. elastic limit