Bangladesh
Steel & Engineering Corporation (BSEC)
Written Exam, Assistant Engineer (Mechanical)
Marks-75, Time: 90 Minutes, Place: Dhanmondi Govt. Boys
School, Dhaka
1. Differentiate
between Impulse and Reaction Turbine. What is staging in turbine?
2. What
is draft tube in Hydraulic turbine?
3. Draw
the block diagram of Vapor compression refrigeration system and the P-V , T-S
Diagram
4. What
are the characteristics of good refrigerant? Why sub-cooling is necessary in refrigeration
system.
5. Write
down the major and minor losses in pumping system
6. Write
down the second law of thermodynamics with practical examples
7. Differentiate
between CI and SI Engine
8. Why
flywheel is used in IC Engines?
9. A
block 30 m by 30m weighing 80 Kg. The friction of Co-efficient from the block
and earth is 0.27. find out the embedding force
10. Front,
Top and Right hand side view of an Isometric view.
11. Write
the Significant of the historical speech on March 7, 1971 by Bangabundhu
12. “Ekti
Khamar Ekti Bari Prokalpo” reducing the poverty through female involvement-
comments
13. Machineries
used in Agricultural increasing the unemployment in rural area- comments.
14. Vocational education impact on
economic-comments
15. Differentiate-
a) Newton’s Law & Daltons law b) Physical change & Chemical change c)
Production & Manufacturing d) speed & velocity e) acceleration & retardation
