MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Engineering Questions & Answers Fluid Flow and Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For conduction through a spherical wall with constant thermal conductivity and with inner side temperature greater than outer wall temperature, (one dimensional heat transfer), what is the type of temperature distribution? |
| A. | Linear |
| B. | Parabolic |
| C. | Hyperbolic |
| D. | Logarithmic |
| Answer» D. Logarithmic | |
| 2. |
The outer surface of a long cylinder is maintained at constant temperature. The cylinder does not have any heat source. The temperature in the cylinder will? |
| A. | Increase linearly with radius |
| B. | Decrease linearly with radius |
| C. | Be independent of radius |
| D. | Vary logarithmically with radius |
| Answer» E. | |
| 3. |
A copper block and an air mass block having similar dimensions are subjected to symmetrical heat transfer from one face of each block. The other face of the block will be reaching the same temperature at a rate is? |
| A. | Faster in air block |
| B. | Faster in copper block |
| C. | Equal in air as well as copper block |
| D. | Cannot be predicted with the given information |
| Answer» C. Equal in air as well as copper block | |
| 4. |
For a given heat flow and for the same thickness, the temperature drop across the material will be maximum for ____________ |
| A. | copper |
| B. | steel |
| C. | glass-wool |
| D. | refractory brick |
| Answer» D. refractory brick | |
| 5. |
With an increase in the thickness of insulation around a circular pipe, heat loss to surrounding due to ____________ |
| A. | convection increase, while that the due to conduction decreases |
| B. | convection decrease, while that due to conduction increases |
| C. | convection and conduction decreases |
| D. | convection and conduction increases |
| Answer» C. convection and conduction decreases | |
| 6. |
The slower the rate of pouring molten metal into the mold, the nature of fluidity will be? |
| A. | lower |
| B. | higher |
| C. | constant |
| D. | either higher or lower |
| Answer» B. higher | |
| 7. |
The liquid metal reduces its fluidity mainly due to? |
| A. | high viscosity |
| B. | high friction factor |
| C. | high surface tension |
| D. | high turbulence |
| Answer» D. high turbulence | |
| 8. |
The capability of molten metal to fill mold cavities is called ____________ |
| A. | viscosity |
| B. | fluidity |
| C. | turbulence |
| D. | velocity |
| Answer» C. turbulence | |
| 9. |
The flow of fluid which is highly chaotic is called as? |
| A. | Laminar |
| B. | Turbulence |
| C. | Reynolds |
| D. | Irrotational flow |
| Answer» C. Reynolds | |