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 maximum extraordinary effect, Maximum Extraordinary Effect De...

Maximum Extraordinary Effect Determine the direction of propagation in quartz (ne = 1.553 and no = 1.544) at which the angle between the wave vector k and the Poynting vector S

Work-power-energy, Under the action of constant force, a 2kg block moves su...

Under the action of constant force, a 2kg block moves such that its position x as a function of time is given by X=t^3/3 ,where x in meters and t in sec , the workdone by force in

Limitations of first law of thermodynamics, limitations of first law of the...

limitations of first law of thermodynamics: There are some limitations of First Law of Thermodynamics. 1. When a closed system undergoes thermodynamic cycle, the average he

Explain working of steam drum, Q.Explain working of Steam Drum? Total so...

Q.Explain working of Steam Drum? Total solids concentration in the steam at steam manifold outlet shall not exceed 0.5 ppm during steady operation at MCR.  Fabricator must indic

Determine the extent of imperfection of the gasket surface, Q. Determine th...

Q. Determine the extent of imperfection of the gasket surface? To determine the extent of imperfection of the gasket surface subject to acceptance / rejection, the imperfection

Power plants, explain different power plants..???

explain different power plants..???

Cold service insulation on pipe, Q. Cold service insulation on pipe? Fa...

Q. Cold service insulation on pipe? Factory fabricated sectional pipe insulation shall be applied in staggered joint construction. On multiple layer construction, all joints sh

What is pressure testing, Q. What is Pressure Testing? Pressure test sh...

Q. What is Pressure Testing? Pressure test shall be performed after completion of all welds and the PWHT of the boiler. Prior to final inspection and pressure test, the insi

Mechanisms of machines, slidder crank chain / reciprocating engine mechanis...

slidder crank chain / reciprocating engine mechanism pics

Design lay-down areas for plant, Q. Design lay-down areas for plant? De...

Q. Design lay-down areas for plant? Designated lay-down areas are areas specifically positioned to enable equipment maintenance to be carried out. These are normally assigned f

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