Question Bank for Class Test- 2

Electrical Engineering Department

Basic Mechanical Engineering 2019-20

(Electrical I Scheme MSBTE)

Dear Students,

This is Question Bank for Class Test - 2 for Basic Mechanical Engineering

Chapter - 04 , 05  

02 Marks Questions

 a)  List the applications of refrigeration system

 b)  Describe the functions in refrigeration system i) OLP ii) Thermostat
 c) State the meaning of HVAC. 

d) Identify the component of domestic refrigerator.

e) Enlist types of air compressors. 

f) State the types of Air conditioning system

g) Enlist two effects of frosting.

h)   Define ton of refrigeration.

i)  Describe the functions in refrigeration system   1. Defrost heater
          2.HP/LP cutouts.

04 Marks Questions 

a) Explain working of simple vapour compression system with neat sketch of its layout.

 b) Explain working of centrifugal compressor with sketch.

 c) Describe the working of screw compressor with neat sketch.

 d) State any two methods to reduce power consumption of air compressors            with justification.

e) It is proposed to purchase compressor for furnace of smithy shop of          workshop of polytechnic : (i) State the most suitable type of compressor.           (ii) Justify your answer.

f) It is proposed to use window air-conditioner for air-conditioning of the room        of 4m × 4m × 4m size. State the suggestions for energy saving with justification.

g) Suggest with justification, the type of air conditioner in the following situations : (i) Computer Lab for 60 computer (ii) A room of 5 meter x 5 meter(iii) A city Bus of 45 people capacity 

Prepare answer bank for the said question bank. Get it checked from subject teacher.

                                                                                       
Study well !!