Exam Details
| Subject | Theory of Machine | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 3 IBME-oD6!
DIPLOMA IN MECHANICAL ENGINEERING I ADVANCED LEVEL CERTIFICATE COURSE IN MECHANICAL ENGINEERING (DMEVI IACMEVI)
Term-End Examination
December, 2016
BME-056 THEORY OF MACI-iINES
Time hours Maximum Marks: 70
Note: Answer any five questions. All questions carry equal marks. Assume missing data suitably, if any. Use of scientific calculator is allowed.
1. Explain any four of the following terms 4 x 3 1/2=14
Sliding pair and Turning pair
Degrees of freedom
Kinematic chain
Angular acceleration
Angular momentum
2. A vertical shaft of 100 mm diameter rotating at 150 r.p.m. rests on a flat end foot step bearing. The coefficient of friction is 0.05 and the shaft carries a vertical load of 15 kN. Find the power lost in friction assuming uniform pressure, and uniform wear. 14
3. A belt is running over a pulley of diameter 120 cm at 200 r.p.m. The angle of contact is 1650 and coefficient of friction between the
belt and pulley is 0.3. If the maximum tension in the belt is 3000 find the power transmitted by the belt.
Derive the expression for the velocity of a belt at which maximum power is transmitted. 7+7
4. A spur gear has a module of 2 mm and its pitch line velocity is 0.6283 m/s. If the number of teeth of this spur gear is 30, find the speed of the gear. Also determine its circular pitch.
Explain in brief the law of gearing. 7+7
5. Explain the difference between the turning moment diagram of a 4-stroke and a 2-stroke I.C. engine with suitable sketches. Also derive the expression for coefficient of fluctuation of speed. 14
6. Explain in detail the principle and working of a Watt governor. 14
7. Explain vibration and its effects. Also explain in detail the various types of vibration.
8. Write short notes on any two of the following: 2x7=14
Flat and V Belt Drives
Lower and Higher Pairs
Flywheel and Governor
Types of Bearings
DIPLOMA IN MECHANICAL ENGINEERING I ADVANCED LEVEL CERTIFICATE COURSE IN MECHANICAL ENGINEERING (DMEVI IACMEVI)
Term-End Examination
December, 2016
BME-056 THEORY OF MACI-iINES
Time hours Maximum Marks: 70
Note: Answer any five questions. All questions carry equal marks. Assume missing data suitably, if any. Use of scientific calculator is allowed.
1. Explain any four of the following terms 4 x 3 1/2=14
Sliding pair and Turning pair
Degrees of freedom
Kinematic chain
Angular acceleration
Angular momentum
2. A vertical shaft of 100 mm diameter rotating at 150 r.p.m. rests on a flat end foot step bearing. The coefficient of friction is 0.05 and the shaft carries a vertical load of 15 kN. Find the power lost in friction assuming uniform pressure, and uniform wear. 14
3. A belt is running over a pulley of diameter 120 cm at 200 r.p.m. The angle of contact is 1650 and coefficient of friction between the
belt and pulley is 0.3. If the maximum tension in the belt is 3000 find the power transmitted by the belt.
Derive the expression for the velocity of a belt at which maximum power is transmitted. 7+7
4. A spur gear has a module of 2 mm and its pitch line velocity is 0.6283 m/s. If the number of teeth of this spur gear is 30, find the speed of the gear. Also determine its circular pitch.
Explain in brief the law of gearing. 7+7
5. Explain the difference between the turning moment diagram of a 4-stroke and a 2-stroke I.C. engine with suitable sketches. Also derive the expression for coefficient of fluctuation of speed. 14
6. Explain in detail the principle and working of a Watt governor. 14
7. Explain vibration and its effects. Also explain in detail the various types of vibration.
8. Write short notes on any two of the following: 2x7=14
Flat and V Belt Drives
Lower and Higher Pairs
Flywheel and Governor
Types of Bearings
Other Question Papers
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Subjects
- Applied Thermal Engineering
- Automobile Engineering
- Basics of Thermal Energy
- CAD / CAM
- CNC Machanics
- Computer Integrated Manufacturing
- Engineering Materials
- Machine Design
- Manufacturing Processes-I
- Manufacturing Processes-II
- Manufacturing Processes-III
- Metrology and Instrumentation
- Power Plant Engineering
- Theory of Machine