Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / mayur
Slip of belt
Belt drive is not a positive drive because of the insufficient friction between pulley and belt, the linear speed of rim of pulley and that of the belt on it are different. this difference is known as slip in the belt drive. Slip occurs due to motion of driver without carrying belt over it or motion of belt without taking follower with it.
Let S1 be the percentage slip between driver pulley and belt,
S2 be the percentage slip between belt and driven pulley and
v is the linear velocity of belt per minute.
v = π d1 N1 – π d1 N1 × S1 / 100
v = π d1N1 (1 – S1 / 100) …(1)
Similarly πd2N2 = v – v × S2 / 100 = v (1 – S2 / 100) …(2)
Putting value of v from eq. (1)
πd2N2 = πd1N1 (1 – S1 / 100) × (1 – S2 / 100)
N2 / N1 = d1 / d2 (1 – S1 / 100) × (1 – S2 / 100)
= d1 / d2 [1 – (S1 + S2 / 100)]
Let S = S1 + S2 be the total percentage of slip
N2 / N1 = d1 / d2 [(1 – S/100)]
If thickness of the belt (t) is considered then,
N2 / N1 = d1 + t / d2 + t (1 – S / 100)
If a number of pulleys are used to transmit power then
Nlast follower / Nfirst driver = d1.d3.d5… / d2.d4.d6… [1 – S/100]
where d1.d3.d5… are diameters of the drivers and d2.d4.d6 are diameters for the followers. S is total percentage of slip in all stages.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
i want to run 11kv star connected motor in 6.6kv with delta connected throught inverter, is it possible?
63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?
What will be the current if the resistance total in a series circuit doubles?
Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com
PLZ SEND ME SOME UNIQUE PROJECT OF ELECTRICAL ENG (B.TECH)
what is physical distance of isolator to VCB in 33/11kv sub stations
Ratings of power transformer,Distribution transformer.
why the rotor current becomes in steady state during high slip region? please verify with equations.
hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?
How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current
how we can adjust for three phase motor cold stall time ,hot stall time and thermal register set up?
hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com
WHAT IS MEANT BY OVER EXCITATION IN GENERATOR TRANSFORMERS? DESCRIBE IT.
how choose conductor&depending upon load
Why field rheostat is kept in minimum position while armature rheostat at maximum position?
