written Exam Question for Mechanical Engineers
1. Draw the stress-strain curve for Mild steel. Bangladesh Bank, Assistant Director
(Mech.) -2013
2. What is modulus of Elasticity/Shear Stress? Bangladesh Bank, Assistant Director
(Mech.) -2013
Answer:
Modulus of Rigidity/Shear Stress- within Elastic Limit, Ʈ ∞Ø, Ʈ = CØ , C= Ʈ/Ø,
Where C= Modulus of Rigidity, Ø=
Shear Strain and Ʈ=
Shear Stress
3. What is Modulus of Elasticity/young Modulus? Bangladesh Bank, Assistant Director
(Mech.) -2013
Answer:
Modulus of Elasticity - within Elastic Limit, ð ∞€, ð =E. € , E= ð /€,
Where E= Modulus of Elasticity,
ð = Stress and €= Strain
4.
What is tonne of Refrigeration? Bangladesh Bank, Assistant Director
(Mech.) -2013
Answer:
Tonne of Refrigeration: The amount of refrigeration effect
produced by uniform melting of one tonne (1000 Kg) of ice from and at 0°C in 24 hours.
5. What is Jigs and Fixtures? Bangladesh Bank, Assistant Director (Mech.) -2013
Answer:
Jigs: Jigs are used for holding and grinding the tool in
drilling, reaming or taping operation
Fixtures: Fixtures are used for holding the work in
milling, grinding, planning or turning operations.
