Saraswati Education Society
Saraswati College of Engineering
SECTOR 05, KHARGHAR NAVI MUMBAI
Mechanical Engineering Department
Sub: : NCES
2013-14
Sem: VIII (Rev)
B.E. (Mech)
Assignments
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Assignment 1
Q-1) List various classification of energy sources.
Q-2) Explain in details limitations of conventional & non-conventional sources of energy.
Q-3) Explain the existing & predicted trend of energy demand Globally & in India.
Q-4) Specify the energy status of India & Maharashtra and what is the role of non-conventional
energy
Assignment 2
Q-1) Define the terms
a) Solar altitude angle
b) Latitude
c) Hour angle
d) Day length
e) Declination
f) Solar constant
Q-2) Determine the average value of solar radiation on a horizontal surface for June 22, at the latitude
of 100N, if constants a and b are given as equal to 0.30 and 0.51 respectively, and the ñ/N = 0.55
Q-3) Data for a flat plate collector used for heating the building are given below:
Factor
Location and latitude
Day and time
Annual average intensity of solar radiation
Collectors tilt
No. of glass covers
Heat removal factor for collector
Transmittance of the glass
Absorptance of the glass
Top loss coefficient for collector
specification
Baroda, 220 N
January 1, 11:30 – 12:30(IST)
350 W/m2
latitude + 150
2
0.810
0.88
0.90
7.88 W/m2 0C
NCES
Collector fluid temperature
Ambient temperature
600C
150C
Calculate:
(i) Solar altitude angle (ii) Incident angle (iii) Collector efficiency
Q-4) what is the difference between Pyrheliometer and a pyranometer? Describe the principle of
Angstrom type pyrheliometer.
Q-5) what is the significance of 22nd June and 22nd December with reference to solar rays and angle of
declination?
Q-6) Calculate Sunshine hour angle, max. day length and monthly average of daily global solar
radiations on a horizontal surface located in Ahmadabad,( 220 00’ N, 730 10’ E) for the month of April
15. Average Solar day hours are 10 hrs. Angstrom's constant for Ahmadabad a = 0.27, b = 0.49.
Assignment 3
Q-1) what are different concentrating collectors? Explain with schematic diagram Heliostats with
central receiver.
Q-2) Write a short note on
(a) Solar photo-voltaics (b) Solar furnaces (c) Solar pond power plant (d) Solar Simulator (e) Future
scope of solar energy
Q-3) Explain principal of hydro power & prospects of small hydropower. Write short note on mini &
micro hydel plants.
Q-4) Derive an expression for maximum output fraction from wind power. A wind turbine has rotor
diameter of 15m. The wing speed is 7 m/s. Assume Normal temperature and pressure of air. Energy
utilization factor is 0.72; efficiency of WTG unit is 33%. Calculate the electrical power delivered.
Q-5) Discuss the advantages and disadvantages of horizontal and vertical axis wind turbine.
Assignment 4 & 5
Q-1) Describe various disadvantages and operational problem associated with geothermal energy.
Q-2) Explain the schematic and thermodynamic cycle of liquid dominated single flashed system
geothermal power plant.
Q-3) Write a brief note on prospects of Tidal energy in India.
Q-4) Explain with neat sketch Tidal power plant with Double Basin arrangement.
Q-5) a tidal power plant of the simple single basin type, has a basin area of 30 x106 m2. The tide has a
range of 12 m. The turbine, however, stops operating when the head on it falls below 3 m. Calculate the
energy generated in one filling (or emptying) process, in kilowatt hours if the turbine generator
efficiency is 0.73.
Q-6) Explain with neat sketch the closed or Anderson OTEC cycle.
NCES
Assignment 6
Q-1) what are the various phases of anerobic digestion in a biogas plant? Discuss them in brief.
Q-2) Explain the effect of following parameters on Biogas generation:
(i) Carbon – Nitrogen ratio (ii) Hydrogen Ion concentration (iii) Loading rate (IV) Retention time
Q-3) what are the factors to be considered for selecting a site for a bio-gas plant?
Q-4) what are principal constituent of bio-gas? What is its source? Discuss in detail the various factors
affecting the biogas generation.
Q-5) Describe principle of working of fuel cell. Compare advantage & disadvantages of different types
of fuel cells.
NCES
Saraswati Education Society
Saraswati College of Engineering
SECTOR 05, KHARGHAR NAVI MUMBAI
Mechanical Engineering Department
Sem : VIII (Rev)
B.E. (Mech)
Sub: Automobile Engineering
2013-14
Assignments
Assignment No. 1
Module 1: Introduction, Clutches and Transmissions
Q.1
Q.2
Q.3
Q.4
Q.5
With neat sketch explain the construction, working, advantages and disadvantages
of multi plate dry friction clutch.
With neat sketch explain in detail single plate dry friction clutch.
Explain Cone clutch.
Explain in detail Gear Boxes.
Write short note on non-slip differential.
Assignment No. 2
Module 2: Steering and front axles, brakes
Q.1 Define the following terms w.r.t. steering geometry.
i) Caster ii) Camber iii) Toe iv) King pin inclination v) Combined angle
Q.2 Explain the construction and working of Vacuum Servo Brakes.
Q.3 With reference to brake shoe arrangements in drum brakes explain the following
i) One leading and one trailing shoe type of arrangement.
ii) Two leading shoe type of arrangement Gear box.
Q.4 Draw a neat sketch and describe in detail the working of master cylinder used in
Hydraulic brakes.
.
Q.5 What are the requirements of steering? Explain re-circulating ball type steering?
Assignment No. 3
Module 3: Suspension, Wheels and Tyres
Q.1
Q.2
Q.3
Q.4
Q.5
Write short note on: i) Wishbone Suspension ii) Radial ply Tyres
What are objects of suspension? Describe Telescopic type of shock absorbor.
Why wheel alignment is necessary in automobile ?
What are the basic suspension movements ?
Explain the types of tyres. What is the importance of ignition pressure ?
Assignment No. 4
Module 4: Electrical System
Q.1
Q.2
Q.3
Q.4
Q.5
Explain the principle and types of Electrical Ignition System.
Explain: The Bendix drive
Describe : Distributerless Ignition System
Explain the circuit diagram of combined current & voltage regulator . Describe
its working in detail.
Explain in detail : Dynamo – (principle of operation, construction & working)
.
Assignment No. 5
Module 5 : Body Engineering
Q.1
Q.2
Q.3
Q.4
Q.5
Write short notes on Materials for body construction.
Explain : The load acting on chassis.
What are the types chassis.
Write short notes on overall criteria for vehicle comparison.
Write notes on layout of passengers cars, bus and trucks bodies.
Assignment No. 6
Module 6 : Recent trends in Automobile
Q.1
Q.2
Q.3
Q.4
Q.5
Describe : Oxygen sensor.
Describe : i) Pressure sensor ii) Knock sensor.
Write short note on : i) Methanol sensor ii) Light sensor.
Explain : i) Manifold absolute pressure (MAP) ii) Lambda sensor.
Explain the working of engine control module.
Saraswati Education Society
Saraswati College of Engineering
SECTOR 05, KHARGHAR NAVI MUMBAI
Mechanical Engineering Department
Sem: VIII (Rev)
B.E. (Mech)
Sub: INDUSTRIAL ENGINEERING AND ERP
2013-14
Assignments
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1.
2.
3.
4.
5.
Assignment 1
Define Industrial Engineering. Briefly describe history of industrial engineering
Give an account of Industrial engineering approach. What is system approach to I.E.
Define Productivity. How productivity is measured.
What are all the factors related to productivity. How productivity can be improved?
Enlist various techniques of Industrial engineering. Give a brief description of one I.E technique.
Assignment 2.
1. Define Work study and specify the objectives and describe the steps involved in work study.
2. What is method study? Enlist various steps for conducting method study.
3. What is Work measurement and Time study? Explain in detail the time study, equipments used
and the outcome of time study.
4. What are the objectives of Ergonomics? Explain how productivity can be improved by applying
the principles of ergonomics.
5. What is performance rating and standard time? What are micro motion studies?
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Assignment 3
Define Value Engineering. Explain why Value Engineering is important.
Differentiate Value engineering and Value analysis. Give details.
Enumerate the steps involved in applying Value engineering along with details.
Describe how you can apply Value engineering for a product of your choice.
What is FAST. What are all the strengths and weaknesses of VE.
Assignment 4.
Describe the purpose of inventory control. Give two deterministic models of inventory control.
What are control charts for variables and attributes? Enlist various tools used for quality control.
What are the factors involved in locating the plant. Give different types of plant layout used in
manufacturing.
Define Quality. What is 6 sigma and TQM?
What is importance of waste management in industry? What is JITS?
Assignment 5
1.
2.
3.
4.
Explain Lean and agile manufacturing?
Describe evolution of MRP to ERP.
Differentiate between ERP and BPR. Explain how SCM and ERP are connected.
Discuss the need for computers in industrial engineering. Explain the role of computers for
productivity.
5. What are the advantages of integrated system design in industrial engineering.
Assignment 6
1.
2.
3.
4.
5.
What is ERP? What are the benefits of using ERP?
Give the architecture of ERP. Give a brief account of evolution of ERP.
Enlist various functional modules of ERP. Give a brief account of any one module.
What are steps involved in implementing for ERP? How can we avoid the pit falls?
What is extended ERP? What are the latest trends in ERP?
Industrial Engineering Assignment Problem
1. A work sampling study conducted to establish standard time for an operation
The observation of study is as follows:
a) Total no of observation – 160
b) Manual work observation- 14
c) Machine controlled work observation- 106
d) Machine idle time observation- 40
Average Performance Rating- 85%
No of Parts Produced-40
Allowance for personal need and fatigue-10%
Study conducted for three hours.
Available working hours /day-8hrs
Calculate Standard Time
2. The number of rust spots found in each sample of sheet metal of 1 sq.ft area is noted down as
follows. Draw the appropriate control chart and state if the process is in control or not.
Sample No.
1
2
3
4
5
6
7
8
9
10
Defects No.
7
9
6
9
5
8
7
10
8
6
3. The following data was observed for a sample size of 200 pieces for 20 days.
Determine whether the data exhibits the statistical control limits or not. Evaluate preliminary and
revised control limits
Lot No
Defective
Lot No
Defective
1
10
11
21
2
15
12
25
3
10
13
8
4
12
14
14
5
11
15
4
6
9
16
10
7
22
17
11
8
4
18
11
9
12
19
26
10
24
20
13
4. During manufacture of a part, certain quality characteristics were me ∑X bar =360.4
∑ R bar =8.82. Subgroup size is 6 and there are 26 subgroups. If the specification limits are 14.0
± 0.42 and if th process is control. Calcualte: (1) Process Capability (2) Control limits on X bar
and
R bar charts . (3) Comment on process is in control or not.
Given: n=5, A2= 0.58, D3= 0, D4=2.11, d2=2.326
5.The observed times and the performance rating for five elements are given. Calculate the
standard time assuming personal allownce and rest as 15%. and contingency allowance as 4% of
the basic time.
Element
Observed time, Min
Rating
1
0.2
85%
2
.08
80%
3
0.5
85%
4
0.14
90%
5
1.2
80%
6. A company intends to set up an assembly line to produce 400 parts per 8 hours shift. The
information regarding time and immediate predecessors are given below:
Time
Work
Element
Immediate Predecessors
A
45
None
B
75
A
C
30
D,E,F
D
20
B
E
25
B
F
15
A
G
125
A
H
140
G
I
125
H
J
120
C,I
(1) Draw precedence diagram
(2) Find desired cycle time
(3) Calculate theoretical no. of stations.
7. Explain the heuristic method of line balancing for the following data:
Steps or incremental
task
Immediate
Predecessor
Duration of the task , min.
1
-----
3
2
------
4
3
1
2
4
2
5
5
3
4
6
5
8
7
4
2
8
6
4
9
8
6
(1) Draw precedence diagram (2) Minimum no. of Work Stations
(3) Balancing efficiency
Given: The maximum time available at any work station is 10 minutes.