HEAT TRANSFER
TOP 10 MCQ
1. Which of the following factors affect the heat of reaction based on Kirchhoff equation [GPAT-2023 SHIFT-I]
(a) Molecularity
(b) Temperature
(c) Pressure
(d) Volume
2. What is the heat of vaporization of water at 100°C [GPAT-2011]
(a) 2790 cal/mole
(b) 7290 cal/mole
(c) 7920 cal/mole
(d) 9720 cal/mole
3. What for the baffles are provided in a shell and tube heat exchanger [GPAT-2011]
(a) To increase turbulence
(b) To decrease turbulence
(c) To prevent corrosion
(d) To increase shell side passes
4. Rate of heat flow is
(a) Inversely proportional to the area
(b) Inversely proportional to the temperature
(c) Inversely proportional to the length of the path of flow
(d) Inversely proportional to the time
5. The heat flow that results from mixing or turbulence is
(a) Conduction
(b) Convection
(c) Radiation
(d) Momentary transition
6. The heat transfer which occurs at fluid is
(a) Conduction
(b) Convection
(c) Radiation
(d) Momentary transition
7. The general equation for heat transfer rate, ‘q’, is expressed as
(a) q = UA ΔT
(b) q = A ΔT / U
(c) q = U / A ΔT
(d) q = UA / ΔT
8. Source used for radiation heating
(a) Ultra Violet
(b) Laser
(c) Flame
(d) Infrared Lamps
9. Energy transfer that occurs by electromagnetic radiation is
(a) Conduction
(b) Convection
(c) Radiation
(d) Momentary Transition
10. Heat conduction is ______ proportional to the thickness of the medium
(a) Directly
(b) Indirectly
(c) In absence of
(d) In increasing
ANSWER KEY
| 1-b | 2-d | 3-a | 4-a | 5-b | 6-b | 7-a | 8-d | 9-c | 10-b |
|
|
|
