Arunachal Pradesh PSC Boiler Inspector Previous Year Question Paper 2012 on Professional Knowledge
| Arunachal-Pradesh-PSC-Boiler-Inspector-2012-Mechanical_Eng-Objective | |
| Sr. No. | Questions with multiple options |
| 1. | The first law of thermodynamics throws the light on the concept of
(a) Entropy (b) Temperature (c) Strain (d) Internal Energy |
| 2. | All gases tend to ideal or perfect gas behavior at all temperature as their pressure approaches
(a) Atmospheric (b) Zero (c) Maximum (d) Critical |
| 3. | Which one of the following components is not boiler mounting?
(a) Safety valve (b) Pressure gauge (c) Feed pump (d) Stop valve |
| 4. | The ignition quality of fuels for S.I. engine is determined by
(a) Cetane number rating (b) Octane number rating (c) Calorific value rating (d) Volatility of the fuel |
| 5. | In reciprocating air compressor the method of controlling the quantity delivered is done by
(a) Throttle control (b) Blow-off control (c) Clearance control (d) All of the above |
| 6. | Mechanical efficiency of a gas turbine as compared to internal combustion reciprocating engine is
(a) Higher (b) Lower (c) Same (d) Unpredictable |
| 7. | The flow of water in a pipe of diameter 3000 mm can be measured by
(a) Venturimeter (b) Rotameter (c) Pitot tube (d) Orifice plate |
| 8. | In laminar flow, maximum velocity at the centre of pipe is greater than the average velocity by
(a) Two times (b) Three times (c) Four times (d) None of these |
| 9. | Two forces most important in laminar flow between closely parallel plates are
(a) Inertial and viscous (b) Viscous and pressure (c) Gravity and pressure (d) Pressure and inertial |
| 10. | Coefficient of performance of a domestic refrigerator as compared to that of an air conditioner is generally
(a) More (b) Less (c) Same (d) None of these |
| Published on 30th Sept 2021 | |
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