4021420-VEHICLE BODY ENGINEERING - IMPORTANT QUESTION

 

4021420-VEHICLE BODY ENGINEERING

UNIT-1

1. Types of vehicle drag ?

2. Types of forces and moments acting on the vehicle body ?

3. Wind tunnel testing and its types

4. Explain in detail various body optimization techniques aerodynamics and aids for optimization of drag

UNIT –II

1. Types of car bodies

2. Components of car body and purpose of component

3. Safety equipment of car

4.  Anti locking braking system (ABS)

UNIT-III

1. Types of buses

2. Bus body layout

3. Entrance and exit location

4. Engine location

5. Automatic door system? Types of door

6. Frame construction

UNIT-IV 

1. LCV

2. MCV

3. Vehicle body materials

4. Driver cab design

UNIT-V

1. Types of hand tool

2. Types of power tool

3. Body repair methods

4. Refinishing process

5. Masking and Painting

6. Painting Methods

7. Elements of paints

4020410-FLUID MECHANICS AND FLUID POWER (N-Scheme)IMPORTANT 3 MARKS QUESTIONS

4020410-FLUID MECHANICS AND FLUID POWER

IV-Semester Mechanical Engineering (N-Scheme)

IMPORTANT 3 MARKS QUESTIONS

UNIT-I

Properties of Fluids, Pressure of Fluids & Pressure Measurement

Three Marks Questions

Compare vacuum, atmospheric, gauge and absolute pressure (April 2019, February 2022)

What is the use of dead weight pressure gauge? (February 2022)

Define wetted perimeter and hydraulic radius. (February 2022, October 2018)

Explain gauge and absolute pressure. (December 2020)

State Pascal’s law and give two examples where this principle is applied. (April 2019, December 2020)

Define (a) Specific gravity (b) Cohesion. [December 2020, April 2016]

Name any four properties of a fluid and state their units. (October 2019)

Write short notes on hydraulic press. (April 2019)

A gauge records a pressure of 20kN/m2. Calculate the corresponding absolute pressure in kN/m2 and metre of water. (October 2018)

Define vacuum pressure. (October 2018)

Express 125 kN/m2 of pressure in m of water and mm of mercury. (April 2018)

What is meant by pressure head? [April 2018, October 2017, 2002]

Explain the method of measuring local atmospheric pressure. (October 2017)

What are the precautions to be followed in setting up and operation of manometer?

(October 2017)

Write shot notes on hydraulic jack (October 2018)

Explain the different types of fluids. [April 2015, October 2006]

A gauge fitted to a compressor shows a reading of 30 kN/m2. Compare the corresponding absolute pressure in (a) kN/m2 (b) in ‘m’ of water. (October 2017)

UNIT-II

FLUID  FLOW, FLOW THROUGH PIPES & IMPACT OF JET

Three Marks Questions

What are the types of fluid flow

Define steady and unsteady flow of fluid with example. (October 2019)

Define uniform and non uniform flow of fluid. (April 2019)

Compare laminar flow and turbulent flow. (October 2018)

State the continuity equation of flow (October 2018, 2017)

State Bernoulli’s theorem. (October 2019, 2017)

What are the assumptions made in Bernoulli’s theorem? [April 2019, 2018, 2016, October 2013, 2007]

State any five application of Bernoulli’s theorem?

State the advantages and limitation of Bernoulli’s theorem. [April 2017, 2007, 2005]

What is a pitot tube?

Compare venturimeter and orifice meter (December 2020, April 2015,2010, 2002, 2008, October 2017, 2014, 2004, 2009)

Drive an expression for the discharge through a venturimeter

State the major and minor losses in a pipe line

State the law of fluid friction in laminar flow. (April 2017)

List out the minor losses occurred in the pipe line flow. (Or) Explain any four minor losses occurred in flow through pipes (or) fluid flow. [October 2018, 2016, 2010, 2002, April 2016, 2015]

Write down the expression for Chezy’s formula?

Define wetted perimeter

Derive the expression for force exerted by the jet on a stationary plate held normal to the direction of jet. (February 2022)

Derive an expression for the force exerted and work done by the jet on a series of moving plates. (April 2019, October 2018, 2017)

Define the following :- (i) Co-efficient of contraction. (ii) Co-efficient of velocity. (iii) Co-efficient of discharge. (Or) Define Cp, Cv and Cd. [April 2019, February 2022, October 2002]

What is an impact of jet? State its applications. [December 2020, February 2022, October 2006]

Define the term impact of jet. (October 2019)

Water flows with a velocity of 5m/sec in a pipe of 1m diameter and 1km long. Find Chezy’s constant, if the loss of head due to friction is 10m of water. (April 2018)

Using chezy’s formula, find the loss of head due to friction in a circular pipe 30m long and 75mm diameter when the velocity of flow is 1.8m/sec. take C=100. (April 2015, 2006, October 2016)

Using chezy’s formula, determine the head lost due to friction in a pipe of 80mm diameter and 35m length. The velocity of low is 2 m/s and C=100. (October 2017)

A jet of water 0.25m diameter is moving with a velocity of 30m/sec. find the force exerted by the jet on affixed plate held normal to the jet. (April 2018)

Define the hydraulic co-efficient. State the relation between them. [April 2007, October 2018, 2017, 2004]

UNIT-III

HYDRAULIC TURBINES, CENTRIFUGAL PUMPS & RECIPROCATING PUMPS 

Three Marks Questions

Classification of turbines. 

List out the various types of draft tubes, and explain any one. (February 2022)

What are the surge tanks? Name different types of surge tank. [December 2020, October 2019, 2007, 2006, 2002]

Write any two differences of Francis and Kaplan turbines. (April 2019, October 2017)

How the centrifugal pumps are classified? [October 2013, April 2006]

Name the different types of castings used in centrifugal pumps. (February 2022)

What are the different types of impellers used in centrifugal pumps? (October 2017)

What is meant by Priming? Why is it necessary? [October 2019, 2007, 2005, 2004]

What is meant cavitations? (April 2018)

What is an air vessel? What are its functions? [December 2020, April 2019, 2006]

Differentiate plunger and piston pumps. (April 2019)

Define co efficient of discharge 

What is slip and negative slip of a reciprocating pump? (October 2018)

Compare between plunger pump and piston pump. (Or) What are the difference between plunger pump and piston pump? [April 2018, 2017, 2007, 2006, October 2002]

Write down the formula to find the theoretical discharge of a double acting reciprocating pump. (October 2017)

Explain the need of air vessel in a reciprocating pump. [April 2017, 2007]

Three Marks Questions

UNIT-IV

Hydraulics Systems

What are the various elements of hydraulic systems? [February 2022, October 2018]

Mention any three qualities of a good hydraulic fluid. [February 2022, April 2011, 2010, 2005, October 2017]

Name any three types of hydraulic pumps?

Name few positive displacement pumps.

What is an accumulators and types of accumulators? [April 2014]

What is meant by hydraulic actuator?

What is the function of accumulator? (October 2019, December 2020)

Explain the working of any one types of accumulator. (April 2019)

Draw a spring loaded type accumulator and mark the parts. [October 2016, April 2015]

What is the function of check valve? (October 2019)

Compare pneumatic system with hydraulic system. (October 2006, 2007, 2008, 2011, 2012, 2014, April 2019, 2017, 2016, 2015, 2009)

Differentiate metering-in and metering-out circuits. (April 2019)

List few machines using hydraulic intensifiers. (April 2018)

State the functions of pressure intensifier. [October 2011]

List out the elements of hydraulic system with a line diagram. (October 2017)

State any three Merits and demerits of hydraulic systems. (October 2017)

Explain any two service properties of hydraulic fluids. [October 2015, 2010, April 2015, 2014]

What is hydraulic motor? Explain. (October 2018)

Write any four requirements of good hydraulic fluid. (April 2009, October 2013, 2015)

Three Marks Questions

UNIT-V

PNEUMATIC SYSTEMS

What are the main components of pneumatic system? (Feb 2022)

What are the uses of compressed air?

Classify air compressors

Draw the ISO symbol of FRL unit (Feb 2022)

Draw the ISO symbol of 3/2 and 5/2 DCV.

Explain the working of 5/2 DCV with neat sketch. (Dec 2020)

What is cracking pressure of valve? (oct 19 , Dec2020)

Explain the working of shuttle valve with neat sketch. [April 2019,.2006, 2005, October 2017, 2009, 2004]

State any five merits and any five applications of pneumatic system (October 2016, 2010, April 2019, 2012, 2006, 2014)

What is throttle valve? (October 2019)

Write shot notes on Air service unit (FRL unit) [April 2019, 2009, 2007, October 2017]

Explain the elements of pneumatic system. [April 2019, 2015, 2007, October 2007]

Draw the ISO symbol of quick exhaust valve. (October 2018)

What is meant by 3/2 DCV? (October 2018, 2017)

Explain the quick exhaust valve. [April 2018, 2010, October 2002]

What is the use of quick exhaust valve? (April 2018)

Explain the working of a pressure regulator.(October 2017)

Explain the working of lubricator with a neat sketch. [October 2014]

Explain the working of a check valve in Pneumatic system. [April 2012]

4021410 - HEAT POWER ENGINEERING important question

 

UNIT: I STEAM GENERATORS AND STEAM BOILERS

PART: A (3Marks)

1       Define the term:(i)Enthalpy of evaporation (ii)Enthalpy of water

2       List out the types of steam.

3       Define i) Specific entropy ii) Specific volume of steam iii) Internal energy.

4       Define the term (i) Dryness fraction (ii) Wetness fraction.

5       What are the advantages of super heated steam?

6       State the location of an injector in a steam boiler.

7       Mention the various stages in the formation of steam.

8       What is steam boiler?

9       Define boiler efficiency.

10  Mention the essentials of good steam boiler.

11  List out the factors to considered in the selection of a steam boiler.

12  State the function of (i) Economizer (ii) Air pre-heater (iii) super heater in a boiler.

13  Difference between boiler mountings and boiler accessories.

14  State the various heat losses in a boiler and how to minimize them.

                      

                              PART: B (7Marks & 14 Marks)

1       Explain the working principle of BHEL high pressure boiler.

2       Describe the working of steam safety valve.

3       Distinguish between fire tube boiler and water tube boiler.

4       Write the location function and working of i) Economizer  ii) Air Preheater iii)blow off cock

5       Discuss in detail about  the boiler accessories (i)Injector (ii)steam separator

6       Write the location function and working of i) water level indicator ii) steam stop valve.iii)blow off cock

UNIT: II STEAM ENGINE, STEAM TURBINE, STEAM CONDENSER

 

PART: A [3Mark]

1       What is steam engine?

2       Name the important parts of a steam engine.

3       State the function of piston and connecting rod.

4       Define (i) Indicated power (ii) Brake power

5       What are the types of compounding?

6       State any three classification of steam engine.

7       Compare impulse turbine and reaction turbine.

8       What do you mean by bleeding in steam turbine?

9       State the types of surface condenser.

10  Define surface condenser.

11  Mention the elements of condensing plant.

12  What are the energy losses in steam turbine?

13  Define (i)Mean effective pressure (ii)Indicated power(iii)Brake power

14  Define (i) Mechanical efficiency (ii) Relative efficiency (iii) Overall efficiency.

15  Distinguish between jet and surface condenser.

 

                                                    PART: B [7&14 Marks]

1       Explain the working of reciprocating steam engine.

2       Sketch and explain the actual indicator diagram.

3       Describe the velocity compounding in a steam turbine with a neat sketch.

4       Discuss in detail about pressure compounding in a steam turbine with a neat sketch.

5       Briefly explain about pressure velocity compounding in a steam turbine

6       Describe any two types of jet condenser.

7       Explain any two types of surface condenser.

 

 

 

 

 

 

 

 

 

 

             UNIT: III AIR COMPRESSORS GAS TURBINES AND JET PROPULSION

 

                                                       PART: A [3Marks]

1       Define compressor.

2       What are the uses of compressed air?

3       Define volumetric efficiency of a compressor.

4       Name the applications of axial flow compressor.

5       Difference between reciprocating and rotary compressor.

6       Mention the effects of (i) Regeneration (ii) Intercooling (iii) Reheating.

7       Distinguish between centrifugal and axial flow compressor.

8       Name the advantage and disadvantage of open and closed cycle gas turbine.

9       Write a short note on roots blower.

10 What are the requirements of a combustion chamber in gas turbine?

11 Compare open cycle and closed cycle gas turbine.

12 How are rotary compressor classified?

13 What are the applications of centrifugal compressor?

14 Mention some applications of gas turbine.

15 Distinguish between air craft gas turbine and industrial gas turbine.

 

                                          PART: B [7&14Marks]

1       Explain the working of single stage single acting reciprocating compressor with neat sketch.

2       Explain the working of multi stage single acting reciprocating compressor with neat sketch.

3       Explain the working of gas turbine with regenerator, intercooler and reheater.

4       Discuss in detail about open cycle and closed cycle gas turbine with neat sketch.

5       Describe with a neat sketch the working of turbo-jet engine.

6       Explain the working of ram jet with a neat sketch.

7       Discuss in detail about the working of turbo-propeller engine. State the merits and demerits.

 

 

 

 

 

 

                  UNIT: IV    REFRIGERATION AND AIR CONDITIONING

    

                                                        PART-A [3Marks]

1       What is refrigeration?

2       Difference between heat pump and refrigerator.

3       What are the types of refrigeration?

4       List out the applications of refrigeration.

5       Define (i) Refrigerating effect (ii) COP of refrigerator.

6       What are the types of refrigerants?

7       Define ton of refrigeration (or) state the unit of refrigeration.

8       Mention the desirable properties of refrigerant.

9       Name the psychometric processes.

10 What are the important components of room air conditioner?

11 Distinguish between room and central air conditioning.

12 Mention the factors to be considered in air conditioning for human comfort.

13 What is psychometric chart?

14 Enlist the various loads to be encountered in A/C.

 

                                           PART: B [7&14 Marks]

1       Describe with a neat sketch of a central air conditioning system with its merits and demerits.

2       Describe with a neat sketch of a room air conditioning system with its merits and demerits.

3       Compare vapour compression and vapour absorption refrigeration systems.

4       Explain the working of vapour compression refrigeration system.

5       Explain the working of vapour absorption refrigeration system.

6       Define (i) DPT (ii) WBT (iii) WBT (iv) Humidification (v) Dehumidification (vi) Sensible heating (vii) Sensible cooling.

 

 

 

 

 

 

 

 

 

 

 

               UNIT: V    THERMAL POWER PLANT AND NUCLEAR POWER PLANT

 

                                                          PART: A [3Marks]

 

1       Name any three merits and demerits of thermal power plant.

2       Write briefly on nuclear fuels.

3       Name the major pollutants and their effects from power plants.

4       Define (i) chain reaction (ii) Radioactivity.

5       What is nuclear fission and nuclear fusion?

6       What is the main function of a (i) electrostatic precipitator (ii) scrubber (iii) cyclone separator.

7       Write a short note on fluidized bed combustion.

8       What are the effects of nuclear radiation?

9       Write a short note on disposal of nuclear waste.

10 Difference between nuclear power plant and thermal power plant.

 

 

                                             PART: B [7&14 Marks]

.       

1       Draw the layout of thermal power plant and explain its working.

2       Explain the components of nuclear reactor with a neat sketch.

3       Describe with neat sketch of fast breeder reactor with merits and demerits

4       Draw and explain the layout of  nuclear power plant.

5       Explain the working of CANDU type reactor with neat sketch.

6       Discuss in detail about the working of pressurized water reactor.

7       Describe with neat sketch of boiling water reactor with merits and demerits.