Related Questions

A head comprises of straight flange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to the
A Central dished section and corner torus section
B Corner torus section and central dished section
C Central dished section and straight flange section
D Straight flange section and corner torus section
__________ dished head is the strongest of all.
A Hemispherical
B Elliptical
C Torispherical
D None of these
Generally, elliptical dished heads
A Are manufactured on 2 : 1 ratio of major to minor axis and is recommended to be used for pressure vessels operating above a pressure of 1.5 MN/m2
B Resist half the pressure rating compared to hemi spherical head provided on the cylindrical shell of the same thickness and diameter
C Are approximately as strong as seamless cylindrical shell having the corresponding I.D. and O.D.
D All of the above
Expert says 25% of of serious bicycle accidents involved head injury and that of all head injuries 80% are fatal. What percentage of serious bicycle accidents involve fatal head injuries?
A 16%
B 20%
C 55%
D 105%
Experts say that 25% of all serious bicycle accidents involve head injuries and of all such head injuries, 80% are fatal. What percentage of all serious bicycle accidents involve fatal head injuries?
A 6%
B 20%
C 55%
D 105%
When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?
A T
B U
C V
D Z
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
A $${\text{H}} = \frac{{{\text{Hg}}}}{{{\text{hf}}}}$$
B H = Hg × hf
C H = Hg + hf
D H = Hg - hf
The static head of a centrifugal pump is equal to the _________ of suction head and delivery head.
A Product
B Difference
C Sum
D None of these
The net positive suction head (NPSH) of a centrifugal pump is defined as the sum of the velocity head and the pressure head at the
A Discharge
B Suction
C Suction minus vapor pressure of the liquid at suction temperature
D Discharge minus vapor pressure of the liquid at the discharge temperature
A cylindrical rod of iron, whose height is equal to its radius ,is melted and cast into spherical balls whose radius is half the radius of the rod. find the number of balls.
A 3
B 4
C 5
D 6

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