A. 768
B. 1127
C. 1359
D. 1480
Related Mcqs:
- Heating of ferromagnetic materials to a temperature above Curie temperature makes it ________________________?
A. Insulator for heat & electricity transmission
B. Ferritic
C. Behave like paramagnetic materials
D. Superconductor - The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________?
A. Critical point
B. Curie temperature
C. Inversion temperature
D. Eutectic temperature - Ferromagnetic materials owe their properties to __________________ inner sub-shells ?
A. Completely filled
B. Partially filled
C. Equally filled
D. Vacant - _______________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten ?
A. Stellite
B. High speed steel
C. Cermet
D. Alnico - Cobalt – 60 is used as a source of _____________ in medical therapy & industrial radiography?
A. X-rays
B. γ-rays
C. α-rays
D. β-rays - The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?
A. Carbon
B. Manganese
C. Both A nor B
D. Neither A nor B - A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?
A. Aqueous tension
B. Saturated humidity
C. Vapor pressure
D. Absolute humidity - A material is capable of resisting softening at high temperature, because of its property termed as____________________?
A. Hot temper
B. Hot hardness
C. Fatigue
D. Creep - Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of ?
A. Grashoff number
B. Grashoff number & Reynolds number
C. Reynolds number
D. Grashoff number & Prandtl number - Materials having resistivity ranging from 1 to 100 ohm. cm is termed as___________________?
A. Conductor
B. Insulator
C. Semi-conductor
D. None of these
