6561. The exit cone angle in case of a standard venturimeter is __________ the entrance cone angle.
Smaller than
Greater than
Equal to
Either A or B
✅ The correct answer is option A.
Chemical Engineering
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6562. Which of the following assumptions enables the Euler’s equation of motion to be integrated?
The fluid is incompressible
The fluid is non-viscous
The continuity equation is satisfied
The flow is rotational and incompressible
✅ The correct answer is option A.
6563. Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time’t’. α = a co-efficient to be experimentally determined)?
ε = ε0 + α.t
ε = ε0 + α.t²
ε = ε0 + α.t³
ε = ε0 + α.t⁴
✅ The correct answer is option A.
6564. Diaphragm valves are used for handling __________ fluids.
Corrosive
Viscous
Non-Newtonion
Solid suspended
✅ The correct answer is option A.
6565. Steady non-uniform flow is exemplified by flow through a/an
Long pipe at constant rate
Long pipe at decreasing rate
Expanding tube at increasing rate
Expanding tube at constant rate
✅ The correct answer is option D.
6566. The uniformity of a gas fluidised bed depends upon the __________ of the solid particles.
Size
Surface properties
Both A and B
Neither A nor B
✅ The correct answer is option C.
6567. The simple pitot tube does not measure the
Static pressure
Dynamic pressure
Velocity at the stagnation point
All of the above
✅ The correct answer is option D.
6568. Most of the centrifugal pumps used in chemical plants are usually __________ driven.
Steam
Diesel engine
Electric motor
Gas turbine
✅ The correct answer is option C.
6569. __________ pumps are a group of vacuum pumps.
Hyter
Sump
Mono
Submerged
✅ The correct answer is option A.
6570. Steady flow occurs, when the
Conditions change steadily with time
Conditions are the same at the adjacent points at any instant
Conditions do not change with time at any point
Rate of the velocity change is constant
✅ The correct answer is option C.