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 | June, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 3 IBME-056I
DIPLOMA IN MECHANICAL ENGINEERING
I AnVANCED LEVEL CERTIFICATE
COURSE IN MECHANICAL ENGINEERING
(DMEVI I ACMEVI)
Term-End Examination
June, 2016
0074U
BME-oS6 THEORY OF MACHINES
Time hours Maximum Marks: 70
Note: Answer any five questions. All questions carry equal marks. Assume any missing data suitably. Use of scientific calculator is allowed.
1. Explain any four of the following terms: 4x3 1/2=14
Angle of action
Open belt drive
Tapered roller bearings
Type of friction
Spiral cam
2. Explain the working of a straight line motion, with the Hart's mechanism, with a sketch. 14
3. Describe the working of the following types of pairs with sketches: 4x3 1/2=14
Prismatic or Sliding pair
Cylindrical pair
Spherical pair
Planar pair
4. Discuss the working of the following type of followers: 4x3 1/2=14
Knife edge follower
Roller follower
Flat or mushroom follower
Spherical follower
5. Explain how the self locking is provided in the Screw jack, and prove that the maximum efficiency is given by the equation
emax 1-sin o/1+sin o
where symbols carry usual meaning. 14
6. Derive the equation for mass moment of inertia of a flywheel for an IC engine. 7
The turning moment diagram for a multi-cylinder IC engine is drawn to the following scale:
1 cm 20° Crank angle
1 cm= 2.5 kNm
During one revolution of the crank the areas with references to the mean torque line are 3.62, 3.56, 4.30, cm^2. Determine the mass moment of inertia to keep the fluctuation of mean speed within ± 25% with reference to mean speed. Engine speed is 220 rpm. 7
7. Explain the working of Hartnell Governor with a neat sketch. 14
8. Write short notes on any two of the following: 7+7
Dynamic Balancing
Harmful Effect of Vibration
Characteristics of Governors
DIPLOMA IN MECHANICAL ENGINEERING
I AnVANCED LEVEL CERTIFICATE
COURSE IN MECHANICAL ENGINEERING
(DMEVI I ACMEVI)
Term-End Examination
June, 2016
0074U
BME-oS6 THEORY OF MACHINES
Time hours Maximum Marks: 70
Note: Answer any five questions. All questions carry equal marks. Assume any missing data suitably. Use of scientific calculator is allowed.
1. Explain any four of the following terms: 4x3 1/2=14
Angle of action
Open belt drive
Tapered roller bearings
Type of friction
Spiral cam
2. Explain the working of a straight line motion, with the Hart's mechanism, with a sketch. 14
3. Describe the working of the following types of pairs with sketches: 4x3 1/2=14
Prismatic or Sliding pair
Cylindrical pair
Spherical pair
Planar pair
4. Discuss the working of the following type of followers: 4x3 1/2=14
Knife edge follower
Roller follower
Flat or mushroom follower
Spherical follower
5. Explain how the self locking is provided in the Screw jack, and prove that the maximum efficiency is given by the equation
emax 1-sin o/1+sin o
where symbols carry usual meaning. 14
6. Derive the equation for mass moment of inertia of a flywheel for an IC engine. 7
The turning moment diagram for a multi-cylinder IC engine is drawn to the following scale:
1 cm 20° Crank angle
1 cm= 2.5 kNm
During one revolution of the crank the areas with references to the mean torque line are 3.62, 3.56, 4.30, cm^2. Determine the mass moment of inertia to keep the fluctuation of mean speed within ± 25% with reference to mean speed. Engine speed is 220 rpm. 7
7. Explain the working of Hartnell Governor with a neat sketch. 14
8. Write short notes on any two of the following: 7+7
Dynamic Balancing
Harmful Effect of Vibration
Characteristics of Governors
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
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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