@⇒ Heat Transfer ⇒ Mechanical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, short cut notes, rapid fire notes, best theory

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Q1.	In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the.
A.	Reynold's number [Wrong Answer]
B.	Grashoff's number [Wrong Answer]
C.	Reynold's number, Grashoff's number [Wrong Answer]
D.	Prandtl number, Grashoff's number [Correct Answer]
View Answer 22 -31 Explanation:- Answer : D Discuss it below : Click here for more comments


Q2.	As relative humidity decreases, the dew point temperature will be __________ wet bulb temperature.
A.	same as [Wrong Answer]
B.	lower than [Correct Answer]
C.	higher man [Wrong Answer]
D.	none of these. [Wrong Answer]
View Answer 13 -2 Explanation:- Answer : B Discuss it below : Click here for more comments


Q3.	The heat transfer takes place according to.
A.	Zeroth law of thermodynamics [Wrong Answer]
B.	First law of thermodynamics [Wrong Answer]
C.	Second law of thermodynamics [Correct Answer]
D.	Kirchhoff's law [Wrong Answer]
View Answer 17 -14 Explanation:- Answer : C Discuss it below : Click here for more comments


Q4.	A refrigeration system.
A.	removes heat from a low temperature body and delivers it to a high temperature body [Correct Answer]
B.	removes heat from a high temperature body and delivers it to a low temperature body [Wrong Answer]
C.	rejects energy to a low temperature body [Wrong Answer]
D.	none of the above [Wrong Answer]
View Answer 13 -3 Explanation:- Answer : A Discuss it below : Click here for more comments


Q5.	The curved lines on a psychrometric chart indicates.
A.	dry bulb temperature [Wrong Answer]
B.	wet bulb temperature [Wrong Answer]
C.	dew point temperature [Wrong Answer]
D.	relative humidity [Correct Answer]
View Answer 12 -5 Explanation:- Answer : D Discuss it below : Click here for more comments

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