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MCQOPTIONS
This section includes 760 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power) |
| A. | 1/(I.P) |
| B. | 1/(I.P)² |
| C. | I.P. |
| D. | (I.P.)² |
| Answer» D. (I.P.)¬¨‚⧠| |
| 752. |
In forced circulation steam boilers, the force is applied |
| A. | To draw water |
| B. | To circulate water |
| C. | To drain off the water |
| D. | All of these |
| Answer» C. To drain off the water | |
| 753. |
The function of an eccentric rod is |
| A. | To provide reciprocating motion to the slide valve |
| B. | To convert reciprocating motion of the piston into rotary motion of the crank |
| C. | To convert rotary motion of the crankshaft into to and fro motion of the valve rod |
| D. | To provide simple harmonic motion to the D-slide valve |
| Answer» D. To provide simple harmonic motion to the D-slide valve | |
| 754. |
A valve installed between the boiler and the feed pump is |
| A. | Blow off cock |
| B. | Feed check valve |
| C. | Steam stop valve |
| D. | None of these |
| Answer» C. Steam stop valve | |
| 755. |
Superheating of steam is done at |
| A. | Constant volume |
| B. | Constant temperature |
| C. | Constant pressure |
| D. | Constant entropy |
| Answer» D. Constant entropy | |
| 756. |
In a reaction turbine |
| A. | The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades |
| B. | The expansion of steam takes place partly in the fixed blades and partly in the moving blades |
| C. | The steam is expanded from a high pressure to a condenser pressure in one or more nozzles |
| D. | The pressure and temperature of steam remains constant |
| Answer» C. The steam is expanded from a high pressure to a condenser pressure in one or more nozzles | |
| 757. |
In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be |
| A. | 260 kW |
| B. | 282 kW |
| C. | 296 kW |
| D. | 302 kW |
| Answer» C. 296 kW | |
| 758. |
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called |
| A. | Blow off cock |
| B. | Stop valve |
| C. | Superheater |
| D. | None of these |
| Answer» E. | |
| 759. |
Gusset stays in a boiler are provided to |
| A. | Prevent the bulging of flat surfaces |
| B. | Avoid explosion in furnace |
| C. | Prevent leakage of hot flue gases |
| D. | Support furnace freely from top |
| Answer» B. Avoid explosion in furnace | |
| 760. |
Feed water conditioning in thermal power plants in done to |
| A. | Reduce hardness and for removal of solids |
| B. | Increase efficiency of thermal power plant |
| C. | Increase heat transfer rate |
| D. | Increase steam parameters |
| Answer» B. Increase efficiency of thermal power plant | |