In distillation columns, bubble caps are held in place over trays by ________________?
A. Rivets
B. A hold down bar
C. Bolts
D. Both B. and C.
Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator_________________?
The dust collection efficiency of a cyclone separator_________________?
A. Decreases with increase in gas flow rate
B. Is inversely proportional to the mass of the dust particle
C. Is directly proportional to the radius of the dust particle path
D. None of these
Baffle spacing is generally _________________ the I.D. of the shell ?
Baffle spacing is generally _________________ the I.D. of the shell ?
A. More than
B. Not greater than
C. Not less than one fifth of
D. Both B. and C.
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a __________________?
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a __________________?
A. Clearance of 25-75 mm
B. Cap pitch of 1.3-2 times the cap diameter
C. Either A. or B.
D. Neither A. nor B.
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?
A. 4(P2 – πd2/4)/πd
B. (P2 – rd2/4)/rd
C. 4P2/πd
D. πd/4P2
For identical operating conditions, the pressure drop over _______________ tray is the highest out of the following?
For identical operating conditions, the pressure drop over _______________ tray is the highest out of the following?
A. Sieve
B. Valve
C. Counter flow
D. Bubble cap
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is_______________?
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is_______________?
A. Same
B. Less
C. About 3 times
D. About 0.33 times
Wind load consideration in the design of a support can be neglected, when the vessel is___________________?
Wind load consideration in the design of a support can be neglected, when the vessel is___________________?
A. Tall (say 30 metres), but is full of liquid
B. Tall but empty
C. Short (< 2 m) and housed indoor
D. None of these
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about _____________ percent more than the actual/theoretical design factor?
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about _____________ percent more than the actual/theoretical design factor?
A. 5-10
B. 15-20
C. 30-35
D. 35-40
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the _____________ stress?
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the _____________ stress?
A. Yield point
B. Breaking
C. Ultimate
D. None of these