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
Q. Why we use cold working? Cold working takes place below the recrystallization temperature, and therefore is fundamentally different at the atomic level with effects up to th

diff.between direct stress and bending stress

Consider a car of mass m1 is towing a trailer of mass m2 through a tow bar of stiffness k. Drag forces proportional to the car velocity (b1 v1) and the trailer velocity (b2 v2) a

Q. Maintenance requirement at storage tanks? Little maintenance is required at storage tanks; sometimes access is required for equipment used to remove accumulated solids (this

Q. Corrosion Assessment of Flare and VRU System? The worst case scenario shall be considered during material selection of Flare KO Drums. Depending on the fluid composition ent

A child is twirling a 0.0106 kg ball on a string in a horizontal circle whose radius is 0.096 m. The ball travels once around the circle in 0.540 s. (a) Determine the centripeta

Construction Activities for plant Construction activities, such as shoring and bracing of excavations, lifting and rigging activities and scaffolding need to be considered as p

Deferentiate between hot working and cold working processes

Q. Wind Induced Vibration of Vertical Vessels? Vertical vessels having a height-to-diameter ratio (h/D) (does not include insulation thickness but does include skirt height) gr

The joint bevels shall be prepared in accordance with the registered and approved weld procedure. Internal and external surfaces to be welded shall be clean and free from paint, o