Related Questions

The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
A Working
B Damaging
C Allowable
D None of these
The ultimate tensile stress for mild steel is __________ the ultimate compressive stress.
A Equal to
B Less than
C More than
D None of these
The ultimate tensile stress of mild steel compared to ultimate compressive stress is
A Same
B More
C Less
D Unpredictable
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
A 5-10
B 15-20
C 30-35
D 35-40
If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following:
A Q = S + F
B Q = S - F
C Q = F - S
D Q = S × F
The ratio of the ultimate stress to the design stress is known as
A Elastic limit
B Strain
C Factor of safety
D Bulk modulus
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the
A Ultimate stress to breaking stress
B Ultimate stress to working stress
C Working stress to ultimate stress
D None of these
Factor of safety is the ratio of the __________ stress to the working stress.
A Tensile
B Compressive
C Yield
D Bearing
The ultimate strength in tension for steel is __________ times the ultimate strength in shear.
A 0.5
B 0.9
C 1.5
D 2.5
For steel, the ultimate strength in shear as compared to ultimate strength in tension is
A $$\frac{1}{2}$$
B $$\frac{1}{3}$$
C $$\frac{1}{4}$$
D $$\frac{2}{3}$$

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