Search
.Management Sciences
Category: Chemical Engineering Basics
Factor of safety in machine design is defined as the ratio of ultimate stress to _____________ stress ?
A. Working
B. Bearing
C. Yield
D. None of these
For grinding of softer materials, the grinding wheel should have _________________ grain size ?
A. Finer
B. Coarser
C. Medium
D. Any type of
______________ cannot increase the fatigue strength of a material?
A. Grain refining
B. Grain coarsening
C. Surface hardening
D. Shot peening
Young’s modulus of a material is the measure of its ___________________?
A. Stiffness
B. Malleability
C. Creep resistance
D. Tensile strength
Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its________________?
A. Lower cost
B. Abundant availability
C. Resistance to vegetable acids as the tin plate are commercially used in ‘canning’ industry
D. None of these
The elastic strain in copper is due to the__________________?
A. Motion of dislocations
B. Stretching of atomic bonds
C. Breakage of atomic bonds
D. None of the above
In extrusion of metals, which of the following statement is true ?
A. Speed of the extruded material is same as that of ram speed
B. Redundant work is a function of the die angle
C. Relative motion between the billet surface and the container wall is always present
D. Hollow ram is used for indirect extrusion
Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?
A. Cold
B. Work
C. Age
D. Induction
Auto collimator is used to check____________________?
A. Flatness
B. Angle
C. Rotor balancing
D. Roughness
Steel & cast iron pipes are produced by ______________ casting ?
A. Slush
B. Die
C. Investment
D. True centrifugal
Recent Comments