Related Questions

The recrystallisation temperature of steel is
A 400°C
B 600°C
C 800°C
D None of these
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be
A Same
B More
C Less
D More/less depending on rating
Recrystallization temperature can be lowered by
A Purification of metal
B Grain refinement
C Working at lower temperature
D All of the above
Perminvar alloy having constant permeability is an alloy of
A Nickel, copper and iron
B Nickel, copper and zinc
C Copper, nickel and antimony
D Iron, zinc and bismuth
The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.
A Less than
B Equal to
C More than
D Either B or C; depends on the type of alloy
Constantan an alloy used in thermocouples is an alloy of
A Copper and tin
B Copper and zinc
C Copper and iron
D Copper and nickel
If the cash reserve ratio is lowered by the RBI, its impact on credit creation will be to
A increase it
B decrease it
C no impact
D None of the above
In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then
A Amplitude of distant sidebands decreases
B Amplitude of distant sidebands increases
C Amplitude of distant sidebands remains constant
D Amplitude of distant sidebands first increases, then decreases
Corrosion rate can not be lowered by reducing the __________ of the corroding medium.
A Concentration
B Velocity
C Temperature
D None of these
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by
A Designing new impeller
B Trimming the impeller size to the required size by machining
C Not possible
D Some other alterations in the impeller

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