Related Questions

Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation
A Pressure falls below the vapour pressure
B Pressure becomes very high
C Temperature becomes low
D All of the above
Cavitation in a pump creates so many undesirable effects. Out of the following, which is not an undesirable effect created by cavitation?
A Decrease in effect
B Increase in thrust
C Develops noise
D Develops high pressure
India's latitudinal and longitudinal extent measured in degrees are almost the same, but its north-south extent measured in km is greater than its east-west extent. This is due to the fact that
A Longitudes are not parallel lines
B The distance between latitudes remains the same but the distance between longitudes is greatest at the Equator and nil at the poles where all longitudes join
C All longitudes with their opposites form great circles
D The earth is not a perfect sphere
Cavitation in a centrifugal pump can be avoided by keeping the
A Inlet pressure high
B Outlet pressure low
C Inlet pressure low
D Outlet pressure high
The cavitation in a hydraulic machine is mainly due to
A low pressure
B high velocity
C high pressure
D low velocity
Causes of cavitation on chest x-ray are
A Granulomatosis with polyangitis
B Pulmonary infarction
C Pulmonary tuberculosis
D Fibrosingalveolitis
E Asbestosis
Cavitation in a centrifugal pump results from
A High discharge pressure
B Low barometric pressure
C High discharge velocity
D High discharge rate
In order to avoid cavitation in centrifugal pumps
A The suction pressure should be high
B The delivery pressure should be high
C The suction pressure should be low
D The delivery pressure should be low
The cavitation in a hydraulic machine
A Causes noise and vibration of various parts
B Reduces the discharge of a turbine
C Causes sudden drop in power output and efficiency
D All of the above
Cavitation will begin when
A The pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
B Pressure becomes more than critical pressure
C Flow is increased
D Pressure is increased

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