Yield strength of a polycrystalline metal with an average grain size d, is proportional to
d1/2
d-1/2
d
d-1
- Fog is an example of colloidal system of
- Pick out the wrong statement.
- Young's modulus of a material is the measure of its
- Which one of the following is incombustible?
- Which of the following are considered applications of ultrasonic testing?
- For dynamic strain measurement, the Wheatstone bridge used is of __________ type.
- Absolute zero pressure can be attained at a temperature of
- Temper brittleness of a material can be fairly detected by the __________ test.
- The mechanism involved in the removal of metal in drilling operation is by
- Filler material used in welding should have __________ as compared to the parent metal to be welded.
- Cementite is in the lamellar form in the __________ phase of steel.
- Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid…
- Which of the following is not a characteristic observed in material failure by fatigue fracture?
- Nitriding of a steel part does not increase its
- __________ the exhaust gas is an indication of the incomplete combustion of fuel.
- The hardenability of steel decreases with
- Inertial forces are obtained, when the elastic forces are multiplied by __________ number.
- Cassiterite is an ore of
- A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K…
- Which of the following low melting alloy containing bismuth and lead is used for electric fuse?
- Nickel is a __________ material.
- Electrochemical corrosion can occur, only if __________ is present in contact with metal.
- Which of the following is an ore dressing operation?
- Oxygen cylinders used for autogenous (cutting/welding) purposes are
- Non-ferrous alloys used for making cutting tools need not have high
- __________ is not a case hardening process.
- Ultimate strength in tension as compared to that in shear for steel is
- A pycnometer is used for the measurement of
- Joule-Thomson co-efficient is the ratio of
- __________ metal is used as a bearing liner material.