| 41. |
The inherent characteristic of an equal percentage valve relating flow rate 'q' with valve stem movement 'x' are described by the equation
 |
| a. | A |
| b. | B |
| c. | C |
| d. | D |
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Answer: (a).A
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| 42. |
Curve III in the below diagram represents a/an
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| a. | dilatent fluid |
| b. | pseudo plastic fluid |
| c. | ideal plastic |
| d. | none of these |
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Answer: (b).pseudo plastic fluid
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| 43. |
Colebrook equation for friction factor in turbulent flow is given by following equation. It reduces to Nikuradse equation for a value of ε/D equal to
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| a. | 0 |
| b. | 1 |
| c. | ∞ |
| d. | 0.5 |
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Answer: (b).1
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| 44. |
The percentage slip in a reciprocating pump set is given by the % of (where, Q₁ = actual discharge Q₂ = theoretical discharge)
 |
| a. | A |
| b. | B |
| c. | C |
| d. | D |
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Answer: (d).D
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| 45. | A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity |
| a. | same as that of A. |
| b. | one fourth as that of A. |
| c. | twice as that of A. |
| d. | four times as that of A. |
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Answer: (b).one fourth as that of A.
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