Duty cycle, Mechanical Engineering

Assignment Help:

Duty cycle

The concept of duty cycle is to be clearly understood before operating any machine. Unlike the arc welding power sources, the resistance welding power sources are designated for 1 minute integrating period. Suppose a machine is rated for 50 % duty cycle, it means that after operating the machine for ½ min. at full load, the machine has to be cooled for the next ½ min. The duty cycle at loads different to the full load can be calculated from the formula.

Duty cycle at Y kVA = (rated kVA / Y kVA) x rated KVA

This formula is applicable straight in the case of under loads but while overloading, we should not overlook the constraint imposed by the maximum capacities of the circuit elements e.g. diodes, contacts, etc., though the machine is going to be overloaded to that extent only for a very brief period allowed by this formula. In effect, this formula takes care of the heating of the winding only.


Related Discussions:- Duty cycle

Determine the cycle efficiency, A simple Rankine cycle works between pressu...

A simple Rankine cycle works between pressures 28 bar and 0.06 bar, the initial condition of steam being dry saturated. Determine the cycle efficiency, work ratio and specific st

Determine the maximum efficiency, A jet strikes tangentially a smooth curve...

A jet strikes tangentially a smooth curved vane moving in the similar direction as the jet, and the jet gets reversed in the direction. Prove that the maximum efficiency is slightl

Problem type-aspects of scheduling , Problem Type Aforementioned illust...

Problem Type Aforementioned illustration relates to the class of non-cyclic scheduling problems characterized via the subsequent features. (a) The Flexible Manufacturing Sys

Airport drainage, Airport Drainage: Rainwater should be quickly taken...

Airport Drainage: Rainwater should be quickly taken away from the runway, taxiway and apron areas. For drainage of runway and taxiway, a cross-slope of 1.5 per cent on either

Illustrate reversible-irreversible and quasi-static process, (a) Illustrate...

(a) Illustrate reversible, irreversible and Quasi-static process with examples. (b) What do you mean by terms change of state, path, process, property, cycle. (c) Distinguish

Kelvin plank statement - thermodynamics, Kelvi n Plank Statement: ...

Kelvi n Plank Statement: Sol: It is impossible to construct this type of H.E. that operates on cyclic process and converts all the heat supplied to it into equivalent

Ejection seat, basic idea in designing of aircraft ejection seat

basic idea in designing of aircraft ejection seat

Calculate for spring amount of load carried, Calculate for spring amount of...

Calculate for spring amount of load carried: The table below gives specific of a compound spring consisting of two co-axial close-coiled springs. If the spring is subjected to

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd