Find speed of dynamo shaft, Mechanical Engineering

Find speed of dynamo shaft:

Q: With the help of belt an engine running at 200rpm drives line shaft. The Diameter of the pulley on engine is 80cm and the diameter of the pulley on line shaft is 40cm. A 100cm diameter pulley on line shaft drives 20cm diameter pulley keyed to dynamo shaft. Find speed of dynamo shaft when: (1) There is no slip (2) There is a slip of 2.5 percent at each drive.

1436_Find speed of dynamo shaft.png

Sol:

Diameter of driver pulley (D1) = 80cm 

Diameter of follower pulley (D2) = 40cm
Diameter of driver pulley (D3) = 100cm
Diameter of follower pulley (D4) = 20cm

Slip on each drive, s1  = s2  = 2.5

Let N4 = Speed of dynamo shaft

(i) When there is no slip

By using equation

N4/N1  = (D1.D3)/(D2.D4)

N4  = N1  X (D1.D3)/(D2.D4) = [(80 X 100) X 200]/(40 X 20)

N4  = 2000RPM                                                            .......ANS

(ii) When there is slip of 2.5 percent at each drive

In this case we will have equation of:

N4/N1  = [(D1.D3)/(D2.D4)][1-s1/100][1-s2/100] By putting the values, we get

1298_Find speed of dynamo shaft1.png

 

Posted Date: 10/18/2012 3:14:06 AM | Location : United States







Related Discussions:- Find speed of dynamo shaft, Assignment Help, Ask Question on Find speed of dynamo shaft, Get Answer, Expert's Help, Find speed of dynamo shaft Discussions

Write discussion on Find speed of dynamo shaft
Your posts are moderated
Related Questions
Automated Material Handling We have dealt along with the automated guided vehicles and Robots utilized in the industry. Because of the industrial automation, various changes h

Tell me the type of furnace and their principle


Q. Illustrate Clay content test? Under this test, the clay content is measured by washing it off the sand sample. The standard dried sand sample (50 gm) is put in a mixing devi

• IGF Vessel SH: CS + 1.6 mm CA + Internal Coating Eductor: 304L SS or alternatively, 12Cr • ORF Vessel SH: CS + 1.6mm CA + Internal Coating Mixer: 316L SS • Skim Oil T

Kinetics: Define Kinetics. What is plane motion? Sol: Kinetics is that branch of mechanics, which deals with force system that produces acceleration and resulting motio

Find out change in diameter: A cylindrical shell, 0.8 m in a diameter and 3 m long is along with 10 mm wall thickness. If the shell is subjected into an internal pressure of 2

Maximum shear stress and angle of twist: Torques are applied on the shaft as illustrated in Figure. Discover in which portion of the shaft, maximum shear stress & angle of twi

Evaluate the maximum bending stresses: A beam of I-section illustrated in Figure is simply supported over a span of 10 m. It carries an uniform load of 4 kN/m over the whole s

how can i do an assignments