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Process Equipment and Plant Design

The clearance between two tubes in a shell and tube heat exchanger is known as ‘ligament’, whose minimum value is _____________ the outside diameter of the tube, but in no case it should be less than 4.5 mm?

Process Equipment and Plant Design /
The clearance between two tubes in a shell and tube heat exchanger is known as ‘ligament’, whose minimum value is _____________ the outside diameter of the tube, but in no case it should be less than 4.5 mm?

A. Equal to
B. Half
C. One fourth
D. Three fourth

The clearance between two tubes in a shell and tube heat exchanger is known as ‘ligament’, whose minimum value is _____________ the outside diameter of the tube, but in no case it should be less than 4.5 mm? Read More »

Process Equipment and Plant Design

A binary liquid Azeotropic mixture has boiling point lower than either of the components, when it shows _____________ deviation from Raoult’s Law?

Process Equipment and Plant Design /
A binary liquid Azeotropic mixture has boiling point lower than either of the components, when it shows _____________ deviation from Raoult’s Law?

A. Positive
B. Negative
C. No
D. None of these

A binary liquid Azeotropic mixture has boiling point lower than either of the components, when it shows _____________ deviation from Raoult’s Law? Read More »

Process Equipment and Plant Design

The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always ?

Process Equipment and Plant Design /
The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always ?

A. 1
B. < 1
C. > 1
D. Equal to the order of reaction

The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always ? Read More »

Process Equipment and Plant Design

Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from ?

Process Equipment and Plant Design /
Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from ?

A. 1.5-2.5
B. 3.5-5.5
C. 7.5-10.0
D. 10-15

Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from ? Read More »

Process Equipment and Plant Design

A ‘rupture disc’ is provided in chemical equipments as an accessory meant for ___________________?

Process Equipment and Plant Design /
A ‘rupture disc’ is provided in chemical equipments as an accessory meant for ___________________?

A. Relieving excess pressure
B. Creating turbulence
C. Enhancing mixing rate
D. Avoiding vortex formation

A ‘rupture disc’ is provided in chemical equipments as an accessory meant for ___________________? Read More »

Process Equipment and Plant Design

Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, ζ = yield strength and E = modulus of elasticity) ?

Process Equipment and Plant Design /
Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, ζ = yield strength and E = modulus of elasticity) ?

A. E
B. ζ
C. ζ/E
D. E/ζ

Elastic failure of a material occurs, when the tensile stress equals yield strength, yield point or the elastic limit. Also, the elastic failure occurs according to maximum strain theory, when the maximum tensile strain equals (where, ζ = yield strength and E = modulus of elasticity) ? Read More »

Process Equipment and Plant Design