Gujarat Technological University 2010-5th Sem A.M.Ae.S.I Aeronautical Engineering B.Tech in - Question Paper
Seat No.: _____ Enrolment No.______
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth exam December 2010
Subject code: 150001 Subject Name: Management-II
Date: 11 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
Instructions:
1. Attempt all ques..
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) describe product, production and production management. 07
(b) State the benefits derived from effective production management. 07
Q.2 (a) State the functions of production management department. 07
(b) discuss the various kinds of production systems. 07
OR
(b) What is break even analysis? State the assumption in break even analysis. 07
Q.3 (a) describe market research. State its objectives. 07
(b) discuss the concept of product life cycle. 07
OR
Q.3 (a) discuss the functions of packaging. 07
(b) discuss the importance of demand forecasting. State the features of a good
demand forecasting method.
07
Q.4 (a) discuss the important functions of financial management. 07
(b) discuss the relationship of finance department with the other departments of a
business.
07
OR
Q.4 (a) discuss the role of different financial regulatory bodies. 07
(b) discuss the role of a finance manager. 07
Q.5 (a) describe manpower resources planning. discuss the importance of manpower
resources planning.
07
(b) discuss the process of manpower planning 07
OR
Q.5 (a) discuss the process of Management by Objectives. 07
(b) describe 'strategy'. discuss the importance of strategy. 07
*************
Seat No. Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010 Subject code: 150001 Subject Name: Management-II
Date: 11 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
|
Q.1 |
(a) |
Define product, production and production management. |
07 |
|
(b) |
State the benefits derived from effective production management. |
07 | |
|
Q2 |
(a) |
State the functions of production management department. |
07 |
|
(b) |
Explain the different types of production systems. OR |
07 | |
|
(b) |
What is break even analysis? State the assumption in break even analysis. |
07 | |
|
Q.3 |
(a) |
Define market research. State its objectives. |
07 |
|
(b) |
Explain the concept of product life cycle. OR |
07 | |
|
Q.3 |
(a) |
Explain the functions of packaging. |
07 |
|
(b) |
Explain the importance of demand forecasting. State the features of a good demand forecasting method. |
07 | |
|
Q4 |
(a) |
Explain the important functions of financial management. |
07 |
|
(b) |
Explain the relationship of finance department with the other departments of a business. OR |
07 | |
|
Q4 |
(a) |
Explain the role of various financial regulatory bodies. |
07 |
|
(b) |
Explain the role of a finance manager. |
07 | |
|
Q.5 |
(a) |
Define manpower resources planning. Explain the importance of manpower resources planning. |
07 |
|
(b) |
Explain the process of manpower planning OR |
07 | |
|
Q.5 |
(a) |
Explain the process of Management by Objectives. |
07 |
|
(b) |
Define strategy. Explain the importance of strategy. |
07 |
*************
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010
Seat No. Enrolment No.
Subject code: 150102 Subject Name: Fundamentals of Turbo Machines
Date: 15 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Determine the impeller diameters an the width at the impeller exit and the 07 power required to drive the compressor, from the following given data:
Speed 12500 rpm, mass flow 15 kg/s, pressure ratio 4:1, isentropic efficiency 75%, slip factor 0.9, flow coefficient at impeller exit 0.3, hub diameter of eye 15 cm, velocity of air at the entry to and the exit from the impeller 150m/s, stagnation temperature and stagnation pressure at inlet 295 K and 1bar. Assume equal pressure ratio in the impeller and diffuser.
(b) Define degree of reaction and derive the expression for the same. Define the 07 low reaction stage and high reaction stage.
Q.2 (a) Draw and explain the H-S diagram for the axial turbine stage. Also define the 07 performance coefficient for the same.
(b) A multistage gas turbine is to be designed with impulse stages, and is to 07 operate with an inlet pressure and temperature of 6 bar and 900 K and at outlet pressure of 1 bar. The isentropic efficiency of the turbine is 85%. All the stages are to have a nozzle outlet angle of 15 and equal outlet ad inlet blade angles. Mean blade speed of 250 m/s and equal inlet and outlet gas velocities. Estimate the number of stages required considering optimum blade to gas speed ratio.
OR
(b) Draw and explain zero percent, fifty percent and hundred percent reaction 07 axial turbine stages.
Q.3 (a) How the radial turbine differs than axial turbine? Show the entry and exit 07 velocity triangle for a general inward flow radial turbine stage.
(b) For a ninety percent IFR turbine stage derive the expressions for power, stage 07 loading coefficient and degree of reaction.
OR
Q.3 (a) How the spouting velocity is to be defined? Derive the expression for the 07 stage efficiency for the radial turbine stage in terms of pressure ratio and loading coefficient.
(b) An IFR turbine impulse stage with cantilever blades has a flow coefficient of 07
0.4 and develops 100KW with a total to total efficiency of 90% at 12000 rpm. If the flow rate is 2 kg/s at an entry temperature of 400 K determine the rotor diameters, blade angles at the entry and exit, the nozzle exit air angle and the stagnation pressure ratio across the stage. Take d3=0.8d2, zero swirl and constant meridional velocity.
Q.4 (a) Explain the stalling and surging for an axial compressor stage. 07
(b) Air at temperature of 290K enters a ten stage axial flow compressor at the 07 rate of 3kg/s. the pressure ratio is 6.5 and the isentropic efficiency is 90%, the compression process being adiabatic. The compressor has symmetrical blades. The axial velocity of 110 m/s is uniform and the peripheral speed of each stage is 180 m/s. determines the rotor and stator blade angles and flow angles and also the power given to the air. Assume temperature change in each stage is constant.
OR
Q.4 (a) The conditions of air at entry of an axial compressor stage are 768 mm Hg 07 and 314 K. the air angles are Pi=51, p2= 9, a1=a3=7. The mean diameter and peripheral speed are 50 cm and 100 m/s. mass flow rate 25 kg/s, the work done factor 0.95 and mechanical efficiency is 92%. Assuming a stage efficiency 88% determine: air angle at the stator entry, blade height at entry and the hub tip diameter ratio, stage loading coefficient and stage pressure ratio.
Q.5 (a) Explain the matching procedure for the compressors and turbines.
07
07
07
07
(b) What is an equilibrium diagram? How to find out the equilibrium points from the characteristic curves?
OR
Q.5 (a) Classify and explain the turbo machines with respect to flow direction, types of fluid and degree of reaction.
(b) Derive the dimenless parameter for compressor pressure p2. where p2 = f(p1,D,m,N,p)
*************
2
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010
Seat No. Enrolment No.
Subject code: 150102 Subject Name: Fundamentals of Turbo Machines
Date: 15 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Determine the impeller diameters an the width at the impeller exit and the 07 power required to drive the compressor, from the following given data:
Speed 12500 rpm, mass flow 15 kg/s, pressure ratio 4:1, isentropic efficiency 75%, slip factor 0.9, flow coefficient at impeller exit 0.3, hub diameter of eye 15 cm, velocity of air at the entry to and the exit from the impeller 150m/s, stagnation temperature and stagnation pressure at inlet 295 K and 1bar. Assume equal pressure ratio in the impeller and diffuser.
(b) Define degree of reaction and derive the expression for the same. Define the 07 low reaction stage and high reaction stage.
Q.2 (a) Draw and explain the H-S diagram for the axial turbine stage. Also define the 07 performance coefficient for the same.
(b) A multistage gas turbine is to be designed with impulse stages, and is to 07 operate with an inlet pressure and temperature of 6 bar and 900 K and at outlet pressure of 1 bar. The isentropic efficiency of the turbine is 85%. All the stages are to have a nozzle outlet angle of 15 and equal outlet ad inlet blade angles. Mean blade speed of 250 m/s and equal inlet and outlet gas velocities. Estimate the number of stages required considering optimum blade to gas speed ratio.
OR
(b) Draw and explain zero percent, fifty percent and hundred percent reaction 07 axial turbine stages.
Q.3 (a) How the radial turbine differs than axial turbine? Show the entry and exit 07 velocity triangle for a general inward flow radial turbine stage.
(b) For a ninety percent IFR turbine stage derive the expressions for power, stage 07 loading coefficient and degree of reaction.
OR
Q.3 (a) How the spouting velocity is to be defined? Derive the expression for the 07 stage efficiency for the radial turbine stage in terms of pressure ratio and loading coefficient.
(b) An IFR turbine impulse stage with cantilever blades has a flow coefficient of 07
0.4 and develops 100KW with a total to total efficiency of 90% at 12000 rpm. If the flow rate is 2 kg/s at an entry temperature of 400 K determine the rotor diameters, blade angles at the entry and exit, the nozzle exit air angle and the stagnation pressure ratio across the stage. Take d3=0.8d2, zero swirl and constant meridional velocity.
Q.4 (a) Explain the stalling and surging for an axial compressor stage. 07
(b) Air at temperature of 290K enters a ten stage axial flow compressor at the 07 rate of 3kg/s. the pressure ratio is 6.5 and the isentropic efficiency is 90%, the compression process being adiabatic. The compressor has symmetrical blades. The axial velocity of 110 m/s is uniform and the peripheral speed of each stage is 180 m/s. determines the rotor and stator blade angles and flow angles and also the power given to the air. Assume temperature change in each stage is constant.
OR
Q.4 (a) The conditions of air at entry of an axial compressor stage are 768 mm Hg 07 and 314 K. the air angles are Pi=51, p2= 9, a1=a3=7. The mean diameter and peripheral speed are 50 cm and 100 m/s. mass flow rate 25 kg/s, the work done factor 0.95 and mechanical efficiency is 92%. Assuming a stage efficiency 88% determine: air angle at the stator entry, blade height at entry and the hub tip diameter ratio, stage loading coefficient and stage pressure ratio.
Q.5 (a) Explain the matching procedure for the compressors and turbines.
07
07
07
07
(b) What is an equilibrium diagram? How to find out the equilibrium points from the characteristic curves?
OR
Q.5 (a) Classify and explain the turbo machines with respect to flow direction, types of fluid and degree of reaction.
(b) Derive the dimenless parameter for compressor pressure p2. where p2 = f(p1,D,m,N,p)
*************
2
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010
Seat No. Enrolment No.
Subject code: 150105 Subject Name: Operation & Maintenance of Aircraft
Date: 20 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Describe the starting procedure of gas turbine engine with starting sequence 07 figure. What all the precautions are to be observed before starting the engine? Which are the occasions where ground run is required?
Q.1 (a (b
Q.2 (a (b
(b
Q.3 (a (b
Q.3 (a (b
Q.4 (a (b
Q.4 (a (b
Describe the actual stages in the overhauling of an engine. What is meant by 07 Time Between Overhauls and who decides it?
Explain requirement of gas turbine lubricant. Which are the desirable 07 characteristics of lubricating oil?
What is thrust augmentation? How is water injection used for thrust 07 augmentation? Explain in detail.
OR
Explain after burner system and nozzle of general electric J-85 engine with fig of 07 afterburner and fuel system components.
Which are the different types of welding used in the repair of aircraft? What 07 precautions should be taken to ensure that the weld work is perfect? Explain method of repair of fuel and oil tanks by welding.
Why pressurization of cabin is required? Describe any pressurization system with 07 figure.
OR
With the help of diagrams explain the functioning of weather radar. What type of 07 beam width is used for this radar? What is its necessity in the aircraft?
What is a transceiver? What are its advantages over separate transmitters and 07 receiver? Explain block diagram of any transceiver.
What is the purpose of measuring exhaust gas temperature? Explain any 07 instrument with the help of a diagram as to how it is used for measuring EGT.
Which all DC power sources are available in the aircraft? What precautions 07 should be taken to maintain lead-acid and nickel-cadmium batteries in good working condition?
OR
What is the purpose of external power supply in the aircraft? Why is it advisable 07 to start the engine by external power supply than its own batteries? How do we ensure that the batteries are used only for vital services?
What is the purpose of 3 Phase tachometer system? Explain with the help of a 07 diagram. Why do we use 400 Hz instead of 50 Hz commonly used in our daily life?
Q.5 (a) What is engine indicating and crew alerting system (EICAS)? What all 07 parameters are displayed by this system? How it forms part of Electronic Control for Aircraft Monitoring (ECAM)?
(b) What is radar? Which are the different types of radars? What all the information 07 could be obtained from radars? With the help of a simple block diagram explain any radar.
OR
Q.5 (a) What is a starter generator? With the help of diagram explain any starter 07 generator. What other ignition systems are used to start an aircraft engine?
(b) What is aircraft contamination? How are the sensors provided to monitor the 07 airframe contamination? How can the airframe contamination be dangerous? What is fuel contamination and how it is prevented?
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2
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010
Seat No. Enrolment No.
Subject code: 150105 Subject Name: Operation & Maintenance of Aircraft
Date: 20 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Describe the starting procedure of gas turbine engine with starting sequence 07 figure. What all the precautions are to be observed before starting the engine? Which are the occasions where ground run is required?
Q.1 (a (b
Q.2 (a (b
(b
Q.3 (a (b
Q.3 (a (b
Q.4 (a (b
Q.4 (a (b
Describe the actual stages in the overhauling of an engine. What is meant by 07 Time Between Overhauls and who decides it?
Explain requirement of gas turbine lubricant. Which are the desirable 07 characteristics of lubricating oil?
What is thrust augmentation? How is water injection used for thrust 07 augmentation? Explain in detail.
OR
Explain after burner system and nozzle of general electric J-85 engine with fig of 07 afterburner and fuel system components.
Which are the different types of welding used in the repair of aircraft? What 07 precautions should be taken to ensure that the weld work is perfect? Explain method of repair of fuel and oil tanks by welding.
Why pressurization of cabin is required? Describe any pressurization system with 07 figure.
OR
With the help of diagrams explain the functioning of weather radar. What type of 07 beam width is used for this radar? What is its necessity in the aircraft?
What is a transceiver? What are its advantages over separate transmitters and 07 receiver? Explain block diagram of any transceiver.
What is the purpose of measuring exhaust gas temperature? Explain any 07 instrument with the help of a diagram as to how it is used for measuring EGT.
Which all DC power sources are available in the aircraft? What precautions 07 should be taken to maintain lead-acid and nickel-cadmium batteries in good working condition?
OR
What is the purpose of external power supply in the aircraft? Why is it advisable 07 to start the engine by external power supply than its own batteries? How do we ensure that the batteries are used only for vital services?
What is the purpose of 3 Phase tachometer system? Explain with the help of a 07 diagram. Why do we use 400 Hz instead of 50 Hz commonly used in our daily life?
Q.5 (a) What is engine indicating and crew alerting system (EICAS)? What all 07 parameters are displayed by this system? How it forms part of Electronic Control for Aircraft Monitoring (ECAM)?
(b) What is radar? Which are the different types of radars? What all the information 07 could be obtained from radars? With the help of a simple block diagram explain any radar.
OR
Q.5 (a) What is a starter generator? With the help of diagram explain any starter 07 generator. What other ignition systems are used to start an aircraft engine?
(b) What is aircraft contamination? How are the sensors provided to monitor the 07 airframe contamination? How can the airframe contamination be dangerous? What is fuel contamination and how it is prevented?
kkkkkkkkkkkkk
2
GUJARAT TECHNOLOGICAL UNIVERSITY
B.E. Sem-Vth Examination December 2010
Seat No. Enrolment No.
Subject code: 150105 Subject Name: Operation & Maintenance of Aircraft
Date: 20 /12 /2010 Time: 03.00 pm - 05.30 pm
Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Describe the starting procedure of gas turbine engine with starting sequence 07 figure. What all the precautions are to be observed before starting the engine? Which are the occasions where ground run is required?
Q.1 (a (b
Q.2 (a (b
(b
Q.3 (a (b
Q.3 (a (b
Q.4 (a (b
Q.4 (a (b
Describe the actual stages in the overhauling of an engine. What is meant by 07 Time Between Overhauls and who decides it?
Explain requirement of gas turbine lubricant. Which are the desirable 07 characteristics of lubricating oil?
What is thrust augmentation? How is water injection used for thrust 07 augmentation? Explain in detail.
OR
Explain after burner system and nozzle of general electric J-85 engine with fig of 07 afterburner and fuel system components.
Which are the different types of welding used in the repair of aircraft? What 07 precautions should be taken to ensure that the weld work is perfect? Explain method of repair of fuel and oil tanks by welding.
Why pressurization of cabin is required? Describe any pressurization system with 07 figure.
OR
With the help of diagrams explain the functioning of weather radar. What type of 07 beam width is used for this radar? What is its necessity in the aircraft?
What is a transceiver? What are its advantages over separate transmitters and 07 receiver? Explain block diagram of any transceiver.
What is the purpose of measuring exhaust gas temperature? Explain any 07 instrument with the help of a diagram as to how it is used for measuring EGT.
Which all DC power sources are available in the aircraft? What precautions 07 should be taken to maintain lead-acid and nickel-cadmium batteries in good working condition?
OR
What is the purpose of external power supply in the aircraft? Why is it advisable 07 to start the engine by external power supply than its own batteries? How do we ensure that the batteries are used only for vital services?
What is the purpose of 3 Phase tachometer system? Explain with the help of a 07 diagram. Why do we use 400 Hz instead of 50 Hz commonly used in our daily life?
Q.5 (a) What is engine indicating and crew alerting system (EICAS)? What all 07 parameters are displayed by this system? How it forms part of Electronic Control for Aircraft Monitoring (ECAM)?
(b) What is radar? Which are the different types of radars? What all the information 07 could be obtained from radars? With the help of a simple block diagram explain any radar.
OR
Q.5 (a) What is a starter generator? With the help of diagram explain any starter 07 generator. What other ignition systems are used to start an aircraft engine?
(b) What is aircraft contamination? How are the sensors provided to monitor the 07 airframe contamination? How can the airframe contamination be dangerous? What is fuel contamination and how it is prevented?
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2
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| Earning: Approval pending. |
