H.W. 1.2: Determine the current flowing at the instant of switching a 60 watt lamp on a 230 V supply. The ambient temperature is 25 C°. The filament temperature is 2000 C° and the resistance temperature coefficient is 0.005 /C° at 0 C°. Answer: I = 2.548 A

H.W. 1.2: Determine the current flowing at the instant of switching a 60 watt lamp on a 230 V supply. The ambient temperature is 25 C°. The filament temperature is 2000 C° and the resistance temperature coefficient is 0.005 /C° at 0 C°. Answer: I = 2.548 A

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 2RQ

See similar textbooks

Related questions

Q: For the circuit shown in Figure, determine the power absorbed by the 5 ohm resiston ww 20 V ( ww

A: As all the elements are connected in series, considering the current flowing in the circuit is i,…

Q: The wattage rating rating of an appliance,W, varies jointly as the square of the current, I, and the…

A: In this question we need to find a constant of variation and wattage when the current is 0.5 ampere…

Q: 7. An ampere-hour meter calibrated at 200 V is used on 220 V circuit and indicates a consumption of…

A: Consider the meter is calibrated at 200 V. The meter is used on 220 V circuit. Consider the…

Q: For the three-way bulb (50 W, 100 W, 150 W), find the resistance of (a)the 100-W filament and (b)…

Q: An electrical appliance has a power ratinf of 10 kW and is having a resistance of 75 ohms. How much…

A: If I represents the current flowing through the device, P represents the power rating of the…

Q: A. What is the power absorbed by the 14Ω resistor, R1? (in watts, upto 2 decimal places) B. What is…

Q: The resistance of a certain aluminum power line is 150 Ω at 200 Find the line resistance when the…

A: ⇒Given Resistance at 20°d (Ti) ⇒ R1 =150Ω Resistance at (T2= 42°d) ⇒ R2 = ? ⇒…

Q: Question 4 (a) A small factory has an electricity demand profile for a given day as shown in Table…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Considering a no.00 AWG wire is 100 m. For no.00 AWG wire, it has a resistance of 0.078 per 1000ft.…

A: In this question AWG wire is given and it's resistance and current flowing through it given....We…

Q: If a nonlinear resistor has a voltage-current relation of V = 513+5, what power does it absorb when…

Q: How much power is used by a load resistance operated at 220 volt potential when the current thru the…

A: Power is the time rate of change of energy. Its SI unit is watt. It is product of voltage and…

Q: The wattage rating rating of an appliance, ?, varies jointly as the square of the current, ?, and…

A: Wattage W ∝ I2 R W = k I2 R Where k is constant of variation.…

Q: What is the relationship between the two given equations? v1=100 cos(377t +30°) volts v2=120…

Q: If a nonlinear resistor has a voltage-current relation of V = 2 I3 + 7, what power does it absorb…

A: In this question, If a nonlinear resistor has a voltage-current relation of V = 2 I3 + 7, what power…

Q: Q1: A lamp of 110 watt power, 250 volt reaches 2110°C. If the - temperature coefficient ao of the…

A: The solution can be achieved as follows.

Q: Find the current flowing through R1, R2, and R3 and the current flowing from the battery V1 using…

Q: current and 3 kW at 220-V. Determine the values of resistance and reactance of each phase of the…

A: For a balanced delta connection The line voltage, VL = Phase voltage, VPh The line current, IL = 3…

Q: OWhat factors affect the resistance of conductor? Give one or two proofs from your daily…

A: 1) The formula for resistance of the conductor is R=ρlaρ-resistivityl-Lengtha-area of cross section…

Q: 14.) Find the value of power dissipated if a voltage v = 240 sin (30t + Tt/4) is applied to a…

A: Power dissipation in a resistor: The power dissipates in the resister in the form the heat and the…

Q: (a) The time varying current through a given resistance element is given by ( it) = 0.06t'-1.5)A.…

Q: Q2. Find the value of (I) and power consumed in ( 30 ) ohm in the figure Shown. 102 www www 3.2 looo…

Q: II- Determine the consuming energy in (kw h) and the monthly cost for the building, if the electrica…

A: For the domestic purposes the energy units are measured in kwh.

Q: 1. An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120…

A: KIRCHHOFF’S LAW KCL: The algebraic sum of all currents at a node is zero. KCL is…

Q: Find the current flowing through R1, R2, and R3 and the current flowing from the battery V1 using…

A: Find explanation below

Q: a) Is a wattmeter required to measure the real power delivered to a resistive load? (b) A wattmeter…

A: a) Yes, wattmeter can measure the real power delivered to a resistive load directly if allowed is…

Q: نقطة واحدة The efficiency for 5-unit string of insulators for the value of K= 0.069, Vt=25V is. If…

A: Given: Five unit string of insulator K=0.069Vt=25 VV1=3.7 VV2=4.09 VV3=4.06 VV4=5.5 VV5=6.9 V

Q: Q1: By using any method for simplifying electric network , Find the current of 10 -: resistor V1 V2…

Q: First, a real battery is connected to a load R1 = 0.5 Q, then the same battery is connected to…

A: Given: The given load resistances are R1=0.5 Ω and R2=1.1Ω and the power loss across each resistor…

Q: Determine the currents (IR1) for the network in the figure below if R1=6. D. Si E 201 D, Si R 5.6AO

Q: OWhat factors affect the resistance of conductor? Give one or two proofs from your daily…

Q: If 120 V is applied to a system that draws a current 10 A, what is the power delivered to the…

Q: Calculate the current in the 10-ohm resistor using Kirchhoff's law I, E₁1 = 10 2 10 E₂=4 3

Q: ohms. Its terminals

Q: A person working on a steel structure while standing on ground. An accident occurred where 7 A pass…

Q: By combining resistances in the circuit of Fig. 1, fine the power supplied by the source and also…

Q: A length of copper telephone line has a resistance of 24 ohms at 20 deg. C. What is the resistance…

Q: advantages and 3

Q: Set up and solve the system of equations for the currents in the branches of the given electric…

Q: A small vegetable shop use the following electric appliances O Two Air Conditioner of rating 1900 W…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: VDC 2. VM 2. VM 4 Ps B How dil the derivation

Q: Choose the correct answer In the USA, the heating element inside a hairdryer is marked as follows:…

A: According to the question we have to find the value of the resistance R.

Q: The efficiency for 5-unit string of insulators for the value of K= 0.069, Vt=25V is. If the test…

A: The solution can be achieved as follows.

Q: 6. Determine the power dissipated by the element of an electric fire of resistance 20 ohms when a…

A: Note as there are two questions and it is not mentioned which question to. So I am doing the first…

Q: What is the current (I) when voltage is 2v and resistance is 44 ohms? Do NOT include units Round…

A: Given : Voltage: V=2 VResistance: R=44 ohmsCalculation of current: I Do NOT include units Round…

Q: Determine the current flowing across 30-ohm load resistor 30 V Si 120 A Vout 1= 100 02= 100 1.2 kQ…

Q: Question 4 (a) An industrial unit has an electricity demand profile for a given day as shown in…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A 2-kW electric iron is connected to a 120-V line. Calculate the current drawn by the iron. A coil…

Q: 1H ww 12 cos wt Volt w Volt 1/2 F Assume that w=8

A: I HAVE EXPLAINED IN DETAIL

Q: A length of copper telephone line has a resistance of 24 ohms at 20 deg. C. What is the resistance…

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.

Question

H.W. 1.2: Determine the current flowing at the instant of switching a 60 watt lamp on a
230 V supply. The ambient temperature is 25 C°. The filament temperature is 2000 Co
and the resistance temperature coefficient is 0.005 /C° at 0 C°.
Answer: I = 2.548 A

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Introduction

VIEW

Solution

VIEW

Step by step

Solved in 2 steps with 1 images

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

Show the complete and step-by-step solution for an upvote. a. The voltage source value if the power dissipated by the 8 Ω resistor is 8 Joules per second. (Answer: 262.051 V) b. The power supplied in Watts by the voltage source if the power dissipated bythe 8 Ω resistor is 1 Joule per second. (Answer: 766.915 W, supplying)
Given:Vb = 100 voltsR = 10000 ohmsC = 200 μFAssuming that after a long period of time, the switch is flipped from position "A" to position "B" at t=0. Determine the power dissipated by the resistor after t=1 sec.
A. What is the power absorbed by the 14Ω resistor, R1? (in watts, upto 2 decimal places)B. What is the power absorbed by the 2 Ω resistor, R2? (in watts)C. What is the power delivered by V2? (in watts)D. What is the power delivered by the 8V voltage supply? (in watts, upto 2 decimal places)
An electric water heater has a rating of 1 kW,230 V. The coil used as theheating element is 10m long and has a resistivity of 1.724 x 10^-6 ohm-cm. Determine the required diameter of the wire in mils? the answer is 2.52 mils (according to ECE board exam answer keys) I don't know how to get it. Can you show me?
The resistance of a mile run of No. 1 copper wire telephone lie is measured and found to be 5.39 ohms? What is the resistance per 1000 ft.? What is the resistance of 3500 ft of No. 10 wire? What is the resistance of 60 ft.?
The wattage rating rating of an appliance,W, varies jointly as the square of thecurrent, I, and the resistance, R. If the wattage is 10 when the current is 1ampere and the resistance is 1000 ohms,a) Find the constant of variation. b) Find the wattage when the current is 0.5 ampere and the resistance is300 ohms.
For the circuit shown, determine the equivalent voltage source in Volts where I1=10 A, I2=1 A, R1=16 Ω, and R2=33 Ω. (i.e. What voltage source should be in series with the a resister to create an equivalent circuit?)
-If a voltmeter that is ideal is connected to measure the voltage across the 83.0-kΩ resistor, what is its reading? Enter the absolute value of the reading in units of V -If a voltmeter of resistance 1.00 MΩ is connected to measure the voltage across the 83.0-kΩ resistor, what is its reading? Enter the absolute value of the reading in units of V
QUESTION -8 The plot describing the thermal characteristics of copper wire is given in the figure. Using this plot, for a 1000ft length copper wire with 10 Ω resistance at room temperature (20oC)a) Calculate the resistance value at 100oC.b) Calculate the power consumed in the cable carrying 10A current at this temperature (100oC) in units Watt.c) Calculate the amount of energy consumed in the cable during a day with the conditions in (a) and (b) in units Joules.d) A motor with 600Watt output power that works with 85% efficiency is driven with 10A current carried in the cable at 100oC. Calculate the amount of power transformed (dissipated) into heat in this system.e) Consider that a cooling system is used to cool the cable to 50oC and the cable carries 10A current. How many watts should be the maximum amount of power consumed by the cooling system in order to gain power (consume less total power).
Given:Vb = 100 voltsR = 10000 ohmsC = 200 μFAssuming that after a long period of time, the switch is flipped from position "A" to position "B" at t=0. Calculate the voltage across the resistor after 3 TC.
Compute the power absorbed or supplied by each component of the circuit Answers should be: p1 = −225 W, p2 = 90 W, p3 = 60 W, p4 = 75 WCan you explain how to calculate each one?
Good day, sir/ma'am. Question: A battery has an emf of 14 V and internal resistance of 0.08 ohms. Its terminals are connected to a load resistance of 3.00 ohms. a.) Find the terminal voltage of the battery. b.) Calculate the power delivered to the load resistor and the power to the internal resistance of the battery. Thank you.