sandip assignment2

7/27/2019 Sandip Assignment2

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HOOGHLY ENGINEERING & TECHNOLOGY COLLEGE

SECOND CLASS TEST, APRIL 2013

Department: CE

Year: First Semester:2nd

Sub: Engg. Thermodynamics & Fluid Mechanics Code: ME 201

Time: - 1 Hrs Full Marks- 25GROUP A

(Multiple Choice Questions)

1. Choose the correct answer from the given alternatives in each of the following questions. 5 1 = 5

A. In a Carnot cycle, heat is transferred ati) constant pressure ii) constant volume iii) constant temperature iv) none of these

B. The efficiency of a Carnot engine is 0.75. If the cycle is reversed, COP of the Carnot refrigeration

cycle will be

i) 0.25 ii) 1.25 iii) 1.33 iv) 0.33C. A reversible adiabatic process on a T-S diagram is represented by a

i) horizontal line ii) vertical line iii) inclined line iv) curved line

D. For pipes, turbulent flow occurs when the Reynolds number is

i) Less than 2000 ii) between 2000 & 4000 iii) more than 4000 iv) less than 4000

E. the latent heat of vaporization at critical point is

i) equal to zero ii) less than zero iii)greater than zero iv) none of the these

GROUP B

(Short Answer Questions)

2. Answer any one question. 5x1=5

A. Prove that Kelvin-Plank and Clausius statements are equivalentstatements.

B. For the pipe Shown in Figure, the diameter of the pipe in section 1-1 and2-2 are 10 cm and 20 cm respectively. If the volume flow rate through the

pipe is 0.005m3/s, find the average velocity at the two sections.

12

1 2


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GROUP C

(Long Answer Questions)

3. Answer any one question.

A. i) A heat pump working on the Carnot cycle takes in heat from a reservoir at 5C and delivers heatto a reservoir at 60C. The heat pump is driven by a reversible heat engine which takes in heat

from a reservoir at 840C and rejects heat to a reservoir at 60C. The reversible heat engine also

drives a machine that absorbs 30 kW. If the heat pump extracts 17 kJ/s from the 5C reservoir,

determine the rate of heat supply from the 840C source, and (b) the rate of heat rejection to the

60C sink. 8

ii)Check whether the following sets of velocity components satisfy the continuity equation ofsteady incompressible flow: 7

a) U= x2-y2, v= x-2xyb) U= -ln xy, v=

B.i) A lump of steel of mass 10 kg at 627C is dropped in 100 kg of oil at 30C. The specific heats ofsteel and oil are 0.5 kJ/ kg K and 3.5 kJ/ kg K respectively. Calculate the entropy change of the steel,

the oil and the universe. 7

iii)One kg of water at 75c is heated at a constant pressure of 0.8 MPa until it becomes super -heatedsteam at 200c. Find the Change in volume, enthalpy, and entropy. 8

Important given data:

P ;MPa Tsat;c Vf Vg vsup200 hf hg h sup200 Sf Sg s sup200

0.8 170.4 0.001115 0.2404 0.2608 721.1 2769.1 2839.3 2.0466 6.6636 6.8158

Cpw =3.18


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Department: ME

Year:Third Semester:6th

Sub: Material Handling Code: ME 605 A



1 Choose the correct answer from the given alternatives in each of the following questions. 5 1 = 5A. which of the following is a FLT attachment

i) battery ii) steering iii) hood iv) drum Grab

B. The bulk material should be called as sized, if its grain average size is

i) Greater than 2.5 ii) Greater than 3.5 iii) Less than 2.5 iv) ) Less than 2.5C. Classification & codification of bulk material is specified by BIS specification number

i) IS:8730:1997 ii) IS:8731:1997 iii) IS:8730:1987 iv) IS:8731:1987

D. According to the Dead-weight principle,

i) use light weight skids ii) use light weight containers iii) use light weight

material handling equipments iv) all of the above v) none of the above

E. . According to the Motion principle

i) load the material during motion ii)unload the material during motion iii) reduce

load/unload time iv) all of the above v) none of the above

GROUP B



i) What are the major aspects of belt conveyor design?ii) Name different types of chain conveyors with their application.


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GROUP C


3. Answer any one question. 1x 15= 15

i) Boxes of size 220mm x 180mm x 100mm have to be conveyed by a belt conveyor ofsufficient belt strength at the rate of 2000 boxes per hour. What will be the size and speed

of the conveyor? 15

ii) Name the major components of the robots with their function. Classify the robotmanipulators. What are the major applications of Robotic handling? (5+5+5)= 15


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Department: ME

Year:Third Semester:6th

Sub: Machining Principle and Machine tools Code: ME 602



2 Choose the correct answer from the given alternatives in each of the following questions. 5 1 = 5A. the angles of inclination of the top surfaces of the turning tool from the plane perpendicular to the

velocity vector is called tools

i) Rake angles ii)clearance angles iii) Cutting edge angles iv) Inclination angles

B. Cutting tools are essentially provided with clearance angle

ii)For easy of chip flow ii) to reduce cutting force iii) to avoid rubbing with the finishsurface iv) ) to reduce friction at chip- tool interface v) All the above

C. ASA system of designation of cutting tool geometry is actually

i) Tool-in-hand system ii) Machine reference system iii) Tool reference system iv) work

reference system

D. The summation of approach angles and principle cutting edge angle of any turning tool will be

i) 60 ii) 90 iii) 120 iv) 180

E. Inclination angle of a turning tool is measured in its

i)Cutting plane ii) Orthogonal plane iii) Reference plane iv) Normal plane

GROUP B



i) Draw a SPTT & visualize its different angles in ASA system?ii) How are conventional machine tools classified on the basis of


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a) Purpose of use, b) Configuration c) Level of Automation

GROUP C


3. Answer any one question. 1x 15= 15

iii) Describe with the help of proper diagram & deriving simple equation, how the rake anglesof SPTT can be converted from

a) ASA to ORS b) ORS to ASA 15iv) Name the materials which are presently used for making cutting tools or insert. Compare

between two materials (of tools) w.r.t. composition. Why the HSS cutting tool still

inevitable used in machining industries

(3+ 6+6)= 15


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sandip assignment2

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