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

Cylindrical pressure vessels in horizontal condition is generally supported on a ________________ support?

A. Lug
B. Skirt
C. Saddle
D. Guy wire

In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?

A. Two
B. Five
C. Ten
D. Twenty

A single pass air heater is connected to a two pass unit. For the air flow rate and other conditions remaining the same, the film heat transfer co-efficient for air will vary in the ratio of_________________?

A. 2
B. 20.8
C. 20.2
D. None of these

In a distillation column, bubble caps are located on trays with a pitch of ______________ times the outside diameter of the caps?

A. 1.3 to 2
B. 1.6 to 2
C. 2.5
D. 1.5 to 3

Joint efficiency (J) for a seamless pipe is_______________?

A. 1
B. 0.85
C. 1.5
D. < 0.5

Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than ______________ kilolitres?

A. 20
B. 30
C. 45
D. 85

The most common standard size of bubble caps used in industrial operation is___________________?

A. 1″ dia cap with 0.5″ dia riser
B. 6″ dia cap with 4″ dia riser
C. 8″ dia cap with 1″ dia riser
D. 4″ dia cap with 8″ dia riser

Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?

A. 75% cut segmental baffle
B. 25% cut segmental baffle
C. Orifice baffle
D. Disk and doughnut baffle

The ratio of linear stress to linear strain is termed as the ____________________?

A. Modulus of elasticity
B. Modulus of rigidity
C. Bulk modulus
D. None of these