Related Questions

The main size reduction operation in ultrafine grinders is
A Cutting
B Attrition
C Compression
D Impact
Temperature of the product during ultrafine grinding
A Increases
B Decreases
C Remains constant
D May increase or decrease ; depends on the material being ground
Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.
A Turning
B Dressing
C Forming
D Surface finishing
The mechanism of size reduction by a hammer mill is by impact and attrition between the
A Grinding element & the housing
B Feed particles
C Both A & B
D Neither A nor B
Out of the following size reduction equipments, the maximum feed size can be accepted by the
A Tube mill
B Ball mill
C Jaw crusher
D Jet pulveriser
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
Size measurement of ultrafine particles can be best expressed in terms of
A Centimetre
B Screen size
C Micron
D Surface area per unit mass
For grinding of softer materials, the grinding wheel should have __________ grain size.
A Finer
B Coarser
C Medium
D Any type of
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
Q.(1-4): Answer the questions on the basis of the information given below. * F,G and H are insurance companies , Q,R,S and T are private detectives .Each detective works for at least one of the insurance companies. * Q always works for F and at least one of the other companies. Some of the time G employs only one of these detectives,' the rest of the time it employs exactly two of them. *F and H each employ exactly two of these detectives all the time. If R works for H only, and if S works for G and H only, T works for--
A F only
B G only
C H only
D both F and G

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