McqMate
Sign In
Hamberger menu
McqMate
Sign in
Sign up
Home
Forum
Search
Ask a Question
Sign In
McqMate Copyright © 2024
→
Mechanical Engineering
→
Heat Transfer (HT)
→
The unit of heat transfer co-efficient i...
Q.
The unit of heat transfer co-efficient in SI unit is
A.
J/M2°K
B.
W/m2°K
C.
W/m°K
D.
J/m°K
Answer» B. W/m2°K
5.3k
0
Do you find this helpful?
25
View all MCQs in
Heat Transfer (HT)
Discussion
No comments yet
Login to comment
Related MCQs
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the
A dimensionless heat transfer coefficient which gives a measure of the ratio of the heat transfer rate to the rate at which heat would be conducted within the fluid under a temperature gradient is known as
The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in laminar zone is related as
A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2 .°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be
For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area
The concept of overall coefficient of heat transfer is used in heat transfer problems of
The concept of overall coefficient of heat transfer is used in case of heat transfer by
If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length
Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place
Fouling factor for a heat exchanger is given by (where, U1 = heat transfer co-efficient of dirty surface U2 = heat transfer co-efficient of clean surface).