Related Questions

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
A garments factory employs 3 categories of workers K, M and N. The efficiency of the 3 categories of workers to do a specific task is in the ratio of 3 : 5 : 6 respectively and the factory employs 15 of category K, 12 of category M and 3 of category N. If the total wages paid to the entire group of 30 workers is Tk. 492 per hour, what will be the wages earned by a category N worker for an 8-hour day?
A Tk. 144
B Tk. 72
C Tk. 192
D Tk. 576
Which of the following mechanical conveyors does not come under the division 'carriers'?
A Belt conveyor
B Bucket elevator
C Screw conveyor
D Apron conveyor
Which of the follwoing mechanical conveyors does not come under the division 'scrapers'?
A Ribbon conveyor
B Flight conveyor
C Bucket elevators
D Drag conveyor
Material of construction of pipe generally used for conveying water in India is
A Stainless steel
B Cast iron
C Wrought iron
D Lead lined steel
A pipe conveying sewage from plumbing system of a single building to common sewer or point of immediate disposal is called
A House sewer
B Lateral sewer
C Main sewer
D Sub-main sewer
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.
A Less than
B 1.25-1.50 times
C 2.5 times
D One-fourth of
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
A More
B Less
C Equal
D None of these
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.
A 1.25
B 1.75
C 2.5
D 3.5
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
A More heating surface
B Less heating surface
C Equal heating surface
D Heating surface depends on other parameters

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