A. Geometrical
B. Kinematic
C. Dynamic
D. All A., B. and C.
Related Mcqs:
- The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the _______________ stress?
A. Working
B. Damaging
C. Allowable
D. None of these - A high vapour velocity is required for high plate efficiency in a sieve plate column. The satisfactory value of operating vapor velocity for design purpose in sieve plate column is about _______________ percent of the flooding velocity?
A. 45
B. 60
C. 80
D. 95 - Pick out the wrong statement pertaining to the design of a horizontal tube evaporator ?
A. It is unsuitable for concentrating those liquids, which form a scale or deposit salt
B. It is suitable for process, in which the final product is a liquor instead of solid
C. Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator
height = 2.5-4 metres
D. Liquor flows inside the tube, while the steam is outside submerging the tube - A cylindrical pressure vessel of volume 6 πm3 has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm2 and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to________________?
A. 5 mm
B. 6 mm
C. 8 mm
D. 10 mm - 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 - For a given design of bubble cap, the number of bubble caps to be used per tray is set by the _________________?
A. Allowable gas velocity through the slots
B. Plate spacing
C. Diameter of the column
D. All A., B. and C. - Pick out the wrong statement pertaining to the design of a basket type evaporator ?
A. It is used for high viscosity liquor having large rate of scaling
B. The tube bundle is suspended on bracket
C. There is no central downtake
D. Downtake is formed by the annular space between the bundle and the shell - Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if___________________?
A. Plain carbon steel and cast iron parts are used
B. Wall thickness is > 30 mm
C. Material of construction is high alloy steel
D. Both B. & C. - In case of design of a shell and tube heat exchanger___________________?
A. Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch
B. Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto
15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than
tube diameter
C. O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres
D. All A., B. & C. - In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as___________________?
A. 0.1
B. 0.8
C. 0.25
D. 0.5
