Power Engineering Unit A2 Chapter 3
Exam 2025 Questions and Answers
Convection - CORRECT ANSWER✔️✔️-Occurs only in fluids (liquids and gases)
Conduction - CORRECT ANSWER✔️✔️-The direct transfer of heat from one substance to
another substance that it is touching.
Radiation - CORRECT ANSWER✔️✔️-The transfer of energy by electromagnetic waves
Parallel Flow - CORRECT ANSWER✔️✔️-Both heat transfer fluids travel in the same direction
Counter Flow - CORRECT ANSWER✔️✔️-Heat transfer fluids travel in opposing directions
Cross flow - CORRECT ANSWER✔️✔️-one fluid flows through the tubes and the second fluid
crosses perpendicular to the tubes
Combined Cross-Counter Flow - CORRECT ANSWER✔️✔️-One fluid reverses in direction
while the other fluid flows perpendicular through it twice
Boiler - CORRECT ANSWER✔️✔️-Main heat transfer surface of the steam generating unit
Temperature gradient - CORRECT ANSWER✔️✔️-Difference between furnace temperature and
boiler water temperature
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
Exam 2025 Questions and Answers
Convection - CORRECT ANSWER✔️✔️-Occurs only in fluids (liquids and gases)
Conduction - CORRECT ANSWER✔️✔️-The direct transfer of heat from one substance to
another substance that it is touching.
Radiation - CORRECT ANSWER✔️✔️-The transfer of energy by electromagnetic waves
Parallel Flow - CORRECT ANSWER✔️✔️-Both heat transfer fluids travel in the same direction
Counter Flow - CORRECT ANSWER✔️✔️-Heat transfer fluids travel in opposing directions
Cross flow - CORRECT ANSWER✔️✔️-one fluid flows through the tubes and the second fluid
crosses perpendicular to the tubes
Combined Cross-Counter Flow - CORRECT ANSWER✔️✔️-One fluid reverses in direction
while the other fluid flows perpendicular through it twice
Boiler - CORRECT ANSWER✔️✔️-Main heat transfer surface of the steam generating unit
Temperature gradient - CORRECT ANSWER✔️✔️-Difference between furnace temperature and
boiler water temperature
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
