Related Questions

In chemical process equipments, the conical bottom heads used, usually has an apex angle of
A 20°
B 40°
C 60°
D 80°
Assume that the equipments maintenance is is done on consecutive instead of nonconsecutive days but that all other scheduling policies are unchanged . For how many of the six days can it be determined both whether the pool is cleaned and whether the equipments maintenance is done ?
A two
B three
C four
D five
Purchased cost of equipments for a chemical process plant ranges from __________ percent of the fixed capital investment.
A 10 to 20
B 20 to 40
C 45 to 60
D 65 to 75
Mr. Ali decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
A 23 steps
B 16 steps
C 46 steps
D 26 steps
Film boiling is usually not desired in commercial equipments, because
A The heat transfer rate is low in view of the large temperature drop
B It is difficult to maintain
C It is not economic
D None of these
'Lang factor' is defined as the ratio of the capital investment to the delivered cost of major equipments. The value of 'Lang factor' for fixed capital investment, for a solid-fluid processing chemical plant ranges from
A 1.2 to 1.4
B 2.5 to 2.7
C 4.2 to 4.4
D 6.2 to 6.4
A 'rupture disc' is provided in chemical equipments as an accessory meant for
A Relieving excess pressure
B Creating turbulence
C Enhancing mixing rate
D Avoiding vortex formation
Safety valves are provided in chemical equipments to guard against excessive
A Temperature
B Pressure/pressure fluctuation
C Turbulence
D Noise
For high pressure process equipments/vessels, the connected nozzle should be
A Welded
B Screwed
C Flanged
D Brazed
Poppy flipped a coin three times and got heads each time. What is the probability that she gets heads on the next flip?
A 1
B 1/4
C 1/2
D 1/3

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