March 2019 - Page 854 of 895 -

In a shell and tube heat exchanger, tube side _______________ of the mass velocity?

Process Equipment and Plant Design / admin

In a shell and tube heat exchanger, tube side _______________ of the mass velocity?

A. Heat transfer co-efficient is proportional to 0.8th power
B. Pressure drop is proportional to the square
C. Both A. & B.
D. Neither A. nor B.

In a shell and tube heat exchanger, tube side _______________ of the mass velocity? Read More »

Process Equipment and Plant Design

The absorption factor is defined as (where, S1 = slope of the equilibrium curve, S2 = slope of the operating line) ?

Process Equipment and Plant Design / admin

The absorption factor is defined as (where, S1 = slope of the equilibrium curve, S2 = slope of the operating line) ?

A. S1/S2
B. S1.S2
C. S2/S1
D. 1/S1.S2

The absorption factor is defined as (where, S1 = slope of the equilibrium curve, S2 = slope of the operating line) ? Read More »

Process Equipment and Plant Design

Which of the following packing materials provides for maximum mass transfer ?

Process Equipment and Plant Design / admin

Which of the following packing materials provides for maximum mass transfer ?

A. Raschig rings
B. Raschig rings
C. Cross-partition rings
D. All give the same value

Which of the following packing materials provides for maximum mass transfer ? Read More »

Process Equipment and Plant Design

Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?

Process Equipment and Plant Design / admin

Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?

A. Size, shape, orientation and surface of the packing particles
B. Density and viscosity of fluids
C. Fluid flow rates
D. All A., B. and C.

Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ? Read More »

Process Equipment and Plant Design

The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about ______________ times the design pressure?

Process Equipment and Plant Design / admin

The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about ______________ times the design pressure?

A. 1.5 to 2
B. 3 to 4
C. 4 to 5
D. > 5

The testing pressure of storage tanks and pressure vessels designed as per Indian standard codes should be about ______________ times the design pressure? Read More »

Process Equipment and Plant Design

____________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.)?

Process Equipment and Plant Design / admin

____________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.)?

A. Hemispherical
B. Dished
C. Ellipsoidal
D. Conical

____________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.)? Read More »

Process Equipment and Plant Design

The slope of the feed line in distillation operation is given by (where, q = fraction of the feed stream that is liquid ?

Process Equipment and Plant Design / admin

The slope of the feed line in distillation operation is given by (where, q = fraction of the feed stream that is liquid ?

A. -q
B. -q/(1-q)
C. -q/(q-1)
D. None of these

The slope of the feed line in distillation operation is given by (where, q = fraction of the feed stream that is liquid ? Read More »

Process Equipment and Plant Design

The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from__________________?

Process Equipment and Plant Design / admin

The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from__________________?

A. 2 to 3
B. 3 to 5
C. 4 to 8
D. 6 to 12

The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from__________________? Read More »

Process Equipment and Plant Design

Liquid gradient over the tray results due to the___________________?

Process Equipment and Plant Design / admin

Liquid gradient over the tray results due to the___________________?

A. Resistance offered to flow of liquids by caps & risers and the flow of gas
B. Low gas velocity
C. Large plate spacing
D. Large reflux ratio

Liquid gradient over the tray results due to the___________________? Read More »

Process Equipment and Plant Design

Height equivalent to a theoretical plate (HETP) is the height of packing that will give the same separation as one theoretical plate in gas-liquid mass transfer operations like distillation, absorption/stripping and humidification/dehumidification. HETP which is experimentally determined, depends upon the_______________?

Process Equipment and Plant Design / admin

Height equivalent to a theoretical plate (HETP) is the height of packing that will give the same separation as one theoretical plate in gas-liquid mass transfer operations like distillation, absorption/stripg and humidification/dehumidification. HETP which is experimentally determined, depends upon the_______________?

A. Flow rates of each fluid
B. Type and size of packing
C. Concentration of each fluid
D. All A, B. & C.

Height equivalent to a theoretical plate (HETP) is the height of packing that will give the same separation as one theoretical plate in gas-liquid mass transfer operations like distillation, absorption/stripping and humidification/dehumidification. HETP which is experimentally determined, depends upon the_______________? Read More »

Process Equipment and Plant Design