Heat Transfer MCQs
Practice free Heat Transfer multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 576 questions — no login required.
Question 478hard
Nusselt number (for forced convection heat transfer) is a function of the __________ number.
Question 479hard
Prandtl number is the reciprocal of
Question 480hard
Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is
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Question 481medium
With increase in temperature, the total emissivity of conductors
Question 482hard
For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are
Question 483hard
Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid
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Question 484hard
The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid
Question 485hard
The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K0 + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be
Question 486hard
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.