Question: a _ ba _ b _ b _ a _ b
[A].abaab
abbab
aabba
bbabb
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
The series is abb/abb/abb/abb. Thus, the pattern ‘abb’ is repeated.
Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
Question: Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
[A].smaller than
larger than
same as
twice
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Actual lift of a pump is always less than the theoretical lift and is limited by the
Question: Actual lift of a pump is always less than the theoretical lift and is limited by the
[A].specific gravity & temperature of the liquid.
leakage & pressure decreasing at higher elevations.
frictional resistance through pipes, fittings & passages.
all (a), (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Delivery of insufficient quantity of liquid by a pump may be caused by
Question: Delivery of insufficient quantity of liquid by a pump may be caused by
[A].air leak in the inlet
low rpm
too high a lift
all (a), (b) and (c)
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by
Question: A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by
[A].decreasing the size of the inlet pipe.
increasing the size of the inlet pipe.
lowering the pump position.
both (b) and (c).
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A rectangular surface 3′ x 4′, has the lower 3 edge horizontal and 6′ below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is(where, y = specific weight of water)
Question: A rectangular surface 3′ x 4′, has the lower 3 edge horizontal and 6′ below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is(where, y = specific weight of water)
[A].39.6y
48y
49.2y
58y
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Centrifugal pump can’t be used to pump
Question: Centrifugal pump can’t be used to pump
[A].molten sodium (used as a coolant in Fast Breeder Reactor).
moderately viscous vegetable oil used in soap industry.
thick molten soap at 80°C.
none of the above.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
m _ nm _ n _ an _ a _ ma _
Question: m _ nm _ n _ an _ a _ ma _
[A].aamnan
ammanm
aammnn
amammn
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
The series is man/man/man/man/man. Thus, the pattern ‘man’ is repeated.
Multistage centrifugal pumps are generally used for
Question: Multistage centrifugal pumps are generally used for
[A].high head.
low head but high discharge.
highly viscous liquid.
slurries of high solid concentration.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be
Question: For flow through a venturi at a particular discharge, the correct relationships among velocities at point X, Y and Z would be
[A].V1 < V2 < V3
V2 > V1 and V2 > V3
V1 > V2 > V3
none of these.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.