An electric boiler has two heating elements each of 230V, 3.5kW rating and contains 8L of water at 30 deg C. Assuming 10%loss of heat from the boiler, find how long after switching on the heater circuit, will the water boil a atmospheric pressure if the two elements of the heaters are in series.

An electric boiler has two heating elements each of 230V, 3.5kW rating and contains 8L of water at 30 deg C. Assuming 10%loss of heat from the boiler, find how long after switching on the heater circuit, will the water boil a atmospheric pressure if the two elements of the heaters are in series.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.7MCQ: Consider Figure 3.5. Match the following, those on the left to those on the right. (i) Im (a)...

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Concept explainers

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.

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