Explore topic-wise MCQs in Energy Engineering.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Energy Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

What is done when there is requirement for more coal in the ball and race mill?

A. The primary air flow is increased
B. The combustion intensity is reduced
C. The secondary air flow sucks out the light coal particles
D. The hopper is fully opened
Answer» B. The combustion intensity is reduced
Discussion
2.

Why are heavy impurities provided in the process of ball and race mill?

A. To resist upward thrust caused by secondary air stream
B. To resist downward thrust caused by primary air stream
C. To resist upward thrust caused by primary air stream
D. To resist downward thrust caused by secondary air stream
Answer» D. To resist downward thrust caused by secondary air stream
Discussion
3.

What is the purpose of fixed vanes in the ball and race mill?

A. Forms a cyclonic flow
B. For easy movement of the coal
C. For directing the airflow
D. For barring the exhaust air to enter back into mill
Answer» B. For easy movement of the coal
Discussion
4.

Which type of fan is used in the ball and race mill?

A. Forced draught fan
B. Balanced draught fan
C. Artificial draught fan
D. Natural draught fan
Answer» B. Balanced draught fan
Discussion