A 2.0 kW aluminum kettle weighing 2 kg holds 2 liters of water. How long, in minutes, will it take this kettle to boil water from an initial temperature of 200C if 40% of the heat supplied is wasted? Specific heat of aluminum is 0.2.

A 2.0 kW aluminum kettle weighing 2 kg holds 2 liters of water. How long, in minutes, will it take this kettle to boil water from an initial temperature of 200C if 40% of the heat supplied is wasted? Specific heat of aluminum is 0.2.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter9: Measuring Instruments

Section: Chapter Questions

Problem 5PP: 5. A digital voltmeter indicates a voltage of 2.5 V when 10 of current flow through a resistor....

See similar textbooks

Related questions

Q: A 3 ohm heater takes 6 amperes while submerged in 1200 grams of water contained in a vessel with a…

A: The amount of heat required to increase the temperature of 1 g of a material by 1 degree Celsius…

Q: You get ready to put some delicious queso into your face-o. You have 1.5L of grade-A prime cheez…

A: Here, we have given a problem related to microwave oven. We have to calculate total time taken by…

Q: 9. Four cubic meters of water is to be heated by means of four 1.5kw, 230V immersion heating…

Q: (a).i. An electric heating element to dissipate 580W on 240V is to be made from nichrome ribbon 1mm…

Q: Which energy can produde 2 trillion watts of electricity? a. Ocean Wave Energy b. OTEC c. Wind d.…

A: Power can ve generated by the various sources like wind, otec, solar etc.

Q: Q2-A// The optimum cooling rate for preserving red blood cells is 2* 10 C/min. At this optimum rate,…

A: At the given optimum rate, the time taken to cool red blood cells is given by the expression as…

Q: xplain how a solar energy system is controlled using the relevant power electronic converters. Your…

A: Photovoltaics directly convert solar energy into electricity. They work on the principle of the…

Q: A 100 Wp solar PV module is installed at a location with irradiation of 4.5 kWh/day. If the impact…

A: Given data, Capacity of solar module C = 100 Wp Irradiation I = 4.5 kWh/day

Q: Question 3 Liquid water at 100 kPa and 25°C is heated in a chamber by mixing it with superheated…

Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

Q: A battery pack of 30 nickel metal hydride battery modules powers a high performance electric…

Q: consider a classroom for 55 students and one instructor, each generating heat at a rate of 100 W.…

A: Given that Number of people in the class room = student+instructor=55+1=56 Heat generated by each…

Q: automobile battery has an emf of 12.6 V and an internal resistance of 0.0710 2. The headlights…

A: In this question, We need to determine the terminal voltage across the load? We know V= IR

Q: our cubic meters of water is to be heated by means of four 1.5kw, 230V immersion heating elements.…

A: Given data: Volume of water =4 m3Power rating of 1 heater, P = 1.5 kWVoltage rating…

Q: Pumped storage hydro is one of the most effective energy storage option available to the electricity…

Q: Which is statement is INCORRECT regarding bio-mass? a. They can "store" solar energy. O b. They are…

A: Bio mass is a fuel gas which is different from solar.

Q: 5. In the figure shown, if the atmospheric pressure is 101.03 kPa and the absolute at the bottom of…

A: 5) It is given that: Pb=3 kPaPatm=101.03 kPa

Q: a) Explain the importance of thermal management of electronics devices.

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: (c) Determine the potential drop across a conductor if a current of 200 mA passes through it and…

A: We need to find out the current and voltage for given problems .

Q: compact fluorescent lamp uses less energy than its equivalent incandescent bulb.how much will a…

A: The solution can be achieved as follows.

Q: A power station of 4 MW has an overall efficiency of 0.35 and a fuel calorific value of 7500…

A: Given, power=4 MW Overall efficiency (η)=0.35 Fuel calorific value= 7500 k.calorific/kg units…

Q: A room air conditioner has a coefficient of performance of 2.9 on a hot day and uses 850 W of…

A: Solution: Given data Coefficient of performance is, Power consumed, (a) The work done is, The…

Q: An insulated piston-cylinder device contains 8L of saturated liquid water at a constant pressure of…

A: The final enthalpy of the water after the evaporation is, h2=h1+x2hfgh1175 kPa=487.01…

Q: Figure www 2002 60 Ω 30 (2 40 Ω 1 of 1 oa Find the equivalent resistance between terminals a and b…

A: Given circuit:

Q: A 100-liter water tank is heated from a 2-kW electrical source. The water is heated up from 20∘ C…

Q: مدرسة الشهيد محمد سد الفنية العياسية الاختصاص: شهرباني أبنية PLL Treat the following questions: 1-…

Q: 24. What is the size in square millimeter (mm^2) is the cable of 300 MCM? (Solution) 150 mm^2 350…

Q: In a tank are 100 liters of brine containing 50 kg. total of dissolved salt. Pure water is allowed…

A: Let Q=amount of salt in the mixture100+3-2t=100+t=Volume of mixtureAt any time tQ100+t=Conentration…

Q: A heating element on an electric stove contains a wire that is 1.1 m long and has a cross-sectional…

Q: An electric kettle need 6 minutes to boil 2kg of water from the initial temperature of 20 degrees.…

A: An electric kettle need 6 minutes to boil 2kg of water from the initial temperature of 20 degrees.…

Q: Calculate the number of kilowatt-hours (kW-hrs) consumed in a weekend (two days) by an 600-Watt…

A: Formula for calculating Kw-hrs is = (Watt * hours * days)/1000

Q: An electric heating element to dissipate 580W on 240V is to be made from nichrome ribbon 1mm wide…

A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again.

Q: Problem 4: In order to calculate the heat loss through the wall of a building, it is necessary to…

A: As per bartleby expert policy, only first individual question is to be answered. Kindly repost…

Q: 2. A tank initially contains 1000 gallons of fresh water. Brine containing 3 lbs/gallon of salt…

A: It is given that: intial quantity of fresh water=1000 gallons3 lbs/gallon of salt flows at 2…

Q: An electric kettle is marked 500W, 230 V, and is found to take 15 min to raise the temperature of…

A: specific water capacity=4200 J/kg∘c Heat produced= v×I×t Heat absorbed by water =mass×specific water…

Q: A 2kW stainless-steel electrical kettle with capacity 2 liters is used to obtain steam from tap…

A: Given,

Q: What is the minimum amount of ice at 0°C that must be added to the contents of a can of diet cola…

A: It is given that: d=Density of water or diet cola = 1 g/ml V=Volume of diet cola = 340 mL…

Q: Four cubic meters of water is to be heated by means of four 1.5 kW, 230-V immersion heating…

Q: : Assume a flat-plate horizontal solar collector with an area of 5.5m2 . (a) Estimate the amount of…

A: (a) It is given that area of flat-plate horizontal solar collector = 5.5 m2 Average irradiance per…

Q: An iron wire has a resistance of 2.78Ω at room temperature of 20ᵒC. when placed near the engine of a…

A: The solution can be achieved as follows.

Q: 5. An electric kettle contains 2L of water which it heats from 20-C to boiling point in 5 minutes.…

A: Specific heat of water is 4184 j/kg. And density of water is 1 g/cm3 So mass of 2 liter water = 2kg.…

Q: A secondary battery containing Li and Lead acid weighing 60 g that operates continuously through 16…

A: According to question: The current through the battery is calculated as ∵I=E-VR⇒I=3.60-116⇒I=0.1625A…

Q: Which is TRUE about Geothermal Energy? A. It can be generated either in geothermal power plants or…

A: We need to tell which of the given statements are true about Geothermal energy.

Q: A power station of 4 MW has an overall efficiency of 0.35 and a fuel calorific value of 7500…

A: Given data: Power plant capacity = 4 MW Load factor = 0.8 Plant capacity factor = 0.7 efficiency =…

Q: How many persons in a conference room? that have the following conditions RSH= 0.030MW, sensible…

A: SOLUTION GIVEN--> ROOM SENSIBLE HEAT = RSH…

Q: Q1)What is the basic difference between conventional and nonconventional energy resources.

A: Sources of energy Conventional energy Non Conventional energy

Q: Example 3.1. The heater element of an electric kettle has a con- stant resistance of 100 Q and the…

A: The complex power in an AC system is defined as the product of rms value of applied voltage and…

Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

A 2.0 kW aluminum kettle weighing 2 kg holds 2 liters of water. How long, in minutes, will it take this kettle to boil water from an initial temperature of 20⁰C if 40% of the heat supplied is wasted? Specific heat of aluminum is 0.2.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A current of 2A flows in a wire offering a resistance of 10ohm. Calculate the energy dissipated by the wire in 0.5 hours.
An electric kettle is marked 500W, 230 V, and is found to take 15 min to raise the temperature of 1.0 kg of water from 150C to boiling point. Calculate the percentage of energy which is employed in heating the water
A heater with a resistance of 17Ω and a rating of 92W should be supplied by a source voltage equivalent to ___. (Give the answer in 2 decimal places.)
A) A light bulb which dissipates 100W of power is left switched on for 1 hour. Calculate the energy used and express your answer in MJ. B) A battery delivers 2W of power to a circuit for 4s. If the circuit current is 0.1A calculate the battery voltage;
4.) An electric kettle is marked 500W, 230 V, and is found to take 15 min to raise the temperature of 1.0kg of water from 15 degree celcius to boiling point. Calculate the percentage of energy which is employed in heatingthe water .
It is required to provide illumination of 150 meter- candle in a factory hall 45 m x 15 m. . Assume that the depreciation factor is 0.80, the coefficient of utilization is 0.40 and the efficiency of the lamp is 20 lumens per watt. Calculate the number of 250 W lamps. a. 60 b. 72 c. 63 d. 56
The total power absorbed by a group of resistors is always equal to the power absorbed by its equivalent resistance. Choose the correct answer: A. True B. False
It is required to provide an illumination of 100 lux in a factory hall 30 m by 15 m. Assume CU = 0.40 and MF = 0.80. If 250 W lamps having an efficiency of 14 lumens per watt are used, determine the total wattage required. Show detailed solution. No solution. No points.
A 220-volt electrical heater is used to warm 6Li/hr of water from 250C to 980C. Assume heat conversion loss of 23% of the total heat supplied, how much current in amperes must be supplied to this heater.a. 3.0072Amps b. 2.9957Amps c. 2.8012Amps d. 3.2160Amps
A 3 ohm heater takes 6 amperes while submerged in 1200 grams of water contained in a vessel with a water equivalent to 200 grams. What is the efficiency of the system if the time required for the temperature to change by 70 degrees Celsius is 3.95 hours? 80% 70% 60% 50%
8.An electric kettle is required to heat 0.6 kg of water from 10°C to boiling point in 5 minutes, the supply voltage being is 230 V. The efficiency of the kettle is 78%. Determine the resistance of the heating element.
Suppose that each headlight of your car uses 3A and that you accidentally left the headlights on. How long will it take for a 12 V battery rated 80A – hr to be fully discharged