While the bin cards are used in the effective stores management, the queuing theory is associated with the _______________ time ?
(A) Waiting
(B) Idle
(C) Inspection
(D) Tool replacement
______________________ iron is produced by the annealing of white cast iron?
(A) Malleable
(B) Nodular
(C) Ductile
(D) Grey
With increase in impurities in metals, their corrosion resistances____________________?
(A) Increase
(B) Decrease
(C) Remain same
(D) May increase or decrease; depending on the type of metal
In the blast furnace, incorporation of water vapour in the blast gives the following effect ?
(A) Increases the reducing potential of the gas
(B) Increases the flame temperature
(C) No significant change occurs
(D) Increases the hydrogen content in the metal
The product out from a cupola is called ____________________?
(A) Wrought iron
(B) Pig iron
(C) Cast iron
(D) None of these
The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the ‘Curie temperature’. Its value for cobalt is ______________ °C?
(A) 768
(B) 1127
(C) 1359
(D) 1480
Super conduction in metals is observed at a temperature of ________________ °K?
(A) <100
(B) >100
(C) About 273
(D) About 373
Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an ______________ body?
(A) Grey
(B) Black
(C) Opaque
(D) White
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is___________________?
(A) Nickel
(B) Cobalt
(C) Vanadium
(D) Platinum
Cascade control is___________________?
(A) The continuous adjustment of the set point index of an automatic control loop by a primary(master) controller
(B) Used when changes in process conditions cause serious upsets in the controlled variable
(C) Useful to control flow from temperature
(D) All A, B & C