Related Questions

A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
A 45
B 60
C 80
D 95
Hole diameter of the seive trays in the distillation column ranges from __________ mm.
A 1 to 3
B 4 to 8
C 3 to 12.5
D 12.5 to 18.5
Diameter of the seive tray column is determined by the
A Lower limit of vapour velocity
B Upper limit of the vapour velocity
C Hole diameter of the seive tray
D Height of the plate spacing
In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is ____________ (ii)
A (i) exothermic (ii) endothermic
B (i) exothermic (ii) exothermic
C (i) endothermic (ii) enodthermic
D (i) endothermic (ii) exothermic
In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface.
A Nucleate
B Local
C Pool
D Saturated
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be
A 2M
B $$\frac{{\text{M}}}{2}$$
C M
D $$\frac{{\text{M}}}{4}$$
The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
A Increase
B Decrease
C Remain unchanged
D Increase/decrease depending on application
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
A Increase
B Decrease
C Remain unchanged
D Increase/decrease depending on application
When metals are heated to high temperature, their __________ increases in general.
A Atomic vibration
B Creep strength
C Yield stress & ultimate tensile strength
D Toughness & stiffness
Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis.
A 500
B 750
C 950
D 1100

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