_____________ heat exchanger is also known as ‘hair type’ exchanger? A. Double pipe B. Finned C. Plate type D. Regenerative

The average velocity in the tubes of a 1-4 heat exchanger is ______________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate ? A. 2 B. 1/2C. 4…

A shell may by termed as thin if its thickness to diameter ratio is less than 0.1. The factor which can be neglected in the calculation of membrane stresses is________________? A. Bending B. Deformation C. Shear D. Elongation

(Le/D) for couplings and unions would be_______________? A. 60 B. 200 C. 350D. Negligible

Ratio of tube length to shell diameter for a shell and tube heat exchanger is________________? A. 8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers B. 4 : 1 to 8 : 1 for liquid-liquid…

Liquid gradient over a tray can be minimised by________________? A. Providing a higher skirt clearance or a higher weir B. Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow…

Slope of counter-current flow rotary drier is in the range of ____________ meter/metre? A. 0 to 0.08 B. 0 to 0.8 C. 0 to 1.5 D. 0 to 2.2

In a multiple effect evaporator system having ‘n’ effects, the amount of water evaporated per unit surface area in approximately equal to _____________ times that in a single effect? A. nthB. (1/n)th C. 0.5 nth D. 1.5 nth

Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally ____________ the outside diameter of the tube but…

Maximum plate efficiency is achieved in case of ______________ flow? A. SplitB. Cross C. Cascade D. Reverse