Related Questions

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
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
A 2 : 1
B 5 : 3
C 7 : 5
D None of these
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
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
Rotameter is a device used to measure
A absolute pressure
B velocity of fluid
C flow
D rotation
The range of a particular rotameter can be increased by
A Use of floats of different densities
B No means
C Increasing the diameter of the float
D Decreasing the diameter of the float
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
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
Whenever G employs only one detective, which of the following must be true? 1.R works for two insurance companies. 2. T works for G, 3. S works for two insurance companies
A 1 only
B 2 only
C 3 only
D 1 and 2 only

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