Related Questions

Rotameter is a device used to measure
A absolute pressure
B velocity of fluid
C flow
D rotation
As the fluid flow rate increases, the float of the rotameter
A Rises in the tube
B Rotates at higher speed
C Rotates at lower speed
D Drops down in the tube
A rotameter works on the principle of __________ pressure drop.
A Constant
B Variable
C Both A & B
D Neither A nor B
In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.
A More than
B Less than
C Equal to
D Either A or B
In area meter (e.g., rotameter), with increase in the fluid flow rate, the
A Pressure drop increases linearly
B Pressure drop is almost constant
C Area through which fluid flows does not vary
D None of these
The operation of a rotameter is based on
A Variable flow area
B Rotation of a turbine
C Pressure drop across a nozzle
D Pressure at a stagnation point
Out of eight crew members three particular members can sit only on the left side. Another two particular members can sit only on the right side. Find the number of ways in which the crew can be arranged so that four men can sit on each side.
A 864
B 863
C 865
D 1728
If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers
A Must remain as before
B Must be increased
C May be decreased
D Must be doubled
The maximum usable range of the usual radar set (on any particular range setting) is determined by
A The width of the transmitted pulses
B The interval between transmitted pulses
C The bandwidth of the receiver IF stages
D The duty cycle
A man spends 75% of his income. his income is increased by 20% and he increased his expenditure by 10%. His savings are increased by :
A 10%
B 25%
C 37.50%
D 50%

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