1. An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120 V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120 V dc power line? Explain your answer.2. Is a wattmeter required to measure the real power delivered to a resistive load? __________ Explain.3. Explain briefly why is there a wattmeter reading in the purely inductive load.4. A wattmeter will indicate zero when the current lags (or leads) the voltage by 90 degrees. Explain.

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

1. An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120 V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120 V dc power line? Explain your answer.

1. An incandescent lamp, rated at 100 W, gives a certain amount of light when placed across the 120 V ac power line. Would the amount of light increase, decrease or remain the same, when the lamp is placed across a 120 V dc power line? Explain your answer.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter23: Special-purpose Outlets—electric Heating, Air Conditioning

Section23.1: Electric Heat

Problem 14R: For ballpark calculations, the wattage output of a 240-volt electric furnace connected to a 208-volt...

See similar textbooks

Related questions

Q: A household electrical device with a capacity of 2800 watts, equipped with a voltage source of (220…

Q: Which is a better source of information, the power supply or the DMM? Why?

Q: It takes 293 Kilo-Joules of energy to bring a certain amount of cold water to boil. If the water…

Q: Can I use the 66-block in telephone wire distribution to its outlets? How is it distributed?

A: According to the question, we need to explain the 66-block in telephone wire distribution.

Q: Is 5222 watts power rated equipment work if it is connected to a wire size no.6? Let voltage source…

Q: The dwelling has a floor area of 142 sq. m. It has a typical household appliance including one 8 kW…

A: A dwelling unit is a place used for providing living accommodations, the place is not a hotel, but…

Q: What type of electrical system is used in homes?

A: Electrical wiring is all about connecting wires and cables to varied Equipment and devices like…

Q: 1. A toaster takes 10 A, from a 120 volts power line. How much power is added? 2. How much current…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: You are a journeyman electrician in an industrial plant. You have been assigned the task of…

A: It is given that, The heater is located in an area with an ambient temperature is 90°F. The power…

Q: In dwelling units, what is the most common wattage found in a 125 VAC incandescent dimmer?

A: It is asked about the most common wattage found in a 125 VAC incandescent dimmer.

Q: You are an electrician working in an industrial plant. The company is constructing a maintenance…

Q: For a ceiling heater rated 1440 watts at 120 volts what is current draw

A: Given values are -

Q: Which of the following boxes commonly used in electrical work is used at a point in the circuit…

A: Junction box- it is box where all wire connection connect at one point. Pull box- Pull boxes are…

Q: At least one wall switch-controlled lighting outlet shall be installed in every habitable room and…

A: The receptacle outlet controlled by a wall switch may be used to meet the given requirement for the…

Q: 10.a. Installation of electric-discharge auxiliary equipment (such as fluorescent, mercury-vapor,…

A: NEC :- The purpose of National Electrical Code (NEC) is protect peoples from hazards of fire and…

Q: Utilization voltage is always lesser than system voltage

A: Conductor-Materials which have free electrons in valence which can flow when comes under any…

Q: How we can improve the overall efficiency of a steam power plant? please type and explain well…

A: In order to understand how we can increase the overall efficiency of Steam Power Plant, we must…

Q: What are the best types of bulbs in the bedroom area, dining area, kitchen area, living room area,…

A: Incandescent bulb- Light that can be work by the incandescence, the emission of light caused by the…

Q: You are an electrician working in an industrial plant. The company is constructing a maintenance…

Q: What are the different onboard sources of electrical power in a modern commercial passenger…

Q: Calculate the voltage drop of a 120/240-volt, three-wire underground residential service installed…

A: Given data, Load current =80 A Length of the conductor = 100 feet Find voltage drop so, Vd=k×I×L×2A…

Q: Part 2- Problems Show formulas and substitution. 1. How much power is consumed by a 12-ohm toaster…

A: As per our policy, i have attempted 1 question Given V=120 voltsR=12 ohm Calculating power…

Q: A 20 HP motor load takes 80 amperes over a feeder line with 0.05-ohm resistance per conductor. If…

A: In this question we need to find a efficiency of the given system.

Q: Diagram the floor plan for the main floor of your home. Locate the service entrance panel. If it is…

A: Here, We have to design the floor plan for the main floor of home.

Q: Calculate the minimum copper conductor size needed for 120/240 V electric range branch circuit the…

A: Given data: Voltage rating=120/240 VPower rating P=12kWMinimum voltage rating…

Q: What are the approximate lumens per watt for an incandescent lamp? _______lumens per watt.…

A: Approximate lumens per watt for an incandescent lamp, fluorescent lamp and an LED lamp are given…

Q: Why are there two electrical system in the world, those are 220 volt- 50 Hz and 110 volt- 60 Hz?…

A: The choice of frequency was arbitrary. Initially there was no particular reason for the different…

Q: If you know that the power of the load that is supplied with a voltage source of (220 volts) is 2000…

A: The resistance of the wire can be written as R=ρlAA=ρlR For voltage V and…

Q: A Hydroelectric Plant has a turbine and generator with an efficiency of 84%. If the dam has a head…

A: Given:

Q: Identify the parts of the wind power system shown.

A: To identify the parts of a wind power systems

Q: !===== Discussion Questions 1. How does energy meter differ from a watt meter? 2. What is the…

A: In this question we will write about energy meter related problems.... Note:- as per our guidelines…

Q: A one-family dwelling has six 3-kW electric wall heaters (with individual thermostats) and five room…

A: A family uses six 3-kW electric wall heaters : and five room air conditioners. The rating of two air…

Q: UNIT 9 VOLTAGE DROP ACROSS CONDUCTORS 81 10. The voltage source across a motor is 238 volts. The…

A: In this question, Find the source voltage if Voltage across the motor = 228V Total drop in…

Q: How does the distance between a power plant and a substation affect the power losses in transmission…

A: In this question we will write about how distance between effect power plant and substation effect…

Q: In the distribution transformer; In the transformer used for the distribution of electricity to the…

A: distribution transformer step down the voltage incoming to distribution transformer =3.3 kV outgoing…

Q: A mobile home served with 120/240 volt 3 wire service that has a calculated load greater than 50…

A: Given: A mobile home served with 120/240 volt 3 wire service that has a calculated load greater than…

Q: Calculate the dc voltages and currents in the circuit of

A: Given circuit is in the DC bias condition so

Q: What is the importance of determining power ratings of the electrical appliances and devices we use…

A: Every electrical appliance has a power rating that indicates how much electricity it requires to…

Q: Determine the power provided by the 20-volt source in the circuit below. Indicate if the 20-volt…

A: The given circuit is:

Q: A string of Suspension Insulators consist of 10 units. If the Voltage across the stri is 50 KV and…

A: Total number of insulator n = 10 Voltage across the string is Vs=50 kv Voltage across the nearest…

Q: A one watt 470-ohm resistor is connected to 24 volts. Is the resistor operating within its power…

A: A one watt 470-ohm resistor is connected to 24 volts. Is the resistor operating within its power…

Q: Determine the proper size of copper wire conductor necessary to apply a 750 W electric motor that is…

A: It is given that: P=750 WL=100 feetVpanel=120 voltsVdrop=1.2 volts

Q: Draw the schematic diagram of a watt hour meter. Label its parts?

A: The Figure below shows the watt-hour diagram:

Q: Which of the following is not an approved grounding method? A) Metallic underground water piping B)…

A: Electrical grounding is a backup pathway that provides an alternating route for the current to flow…

Q: A 4.5-kVA, 240 volt electric clothes dryer contributes _____ amperes to the neutral load , when…

Q: = power system s

Q: If the motor that drives the compressor consumes 990 W of electricity, how long does it take to make…

Q: A single Phase, 86 ampere loaf is located 2800 ft (853m) from the 480-volt electrical power source.…

A: In the given question, a load is 86 ampere that is carried by the aluminum conductor. Hence, the…

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

2. Is a wattmeter required to measure the real power delivered to a resistive load? __________ Explain.

3. Explain briefly why is there a wattmeter reading in the purely inductive load.

4. A wattmeter will indicate zero when the current lags (or leads) the voltage by 90 degrees. Explain.

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 Introduction

VIEW

Step 2 Solution

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

Determine the power provided by the 20-volt source in the circuit below. Indicate if the 20-volt supply is supplying power to the circuit or absorbing power from the circuit.
What is the calculated load when fixed electric heating is used in a residence? (220.51)
A one-family dwelling has six 3-kW electric wall heaters (with individual thermostats) and five room air conditioners. Two air conditioners are rated 10.5 amperes at 230 volts, and the others are rated 7.2 amperes at 115 volts. A service calculation is being performed, using the optional method . How many volt-amperes should be included (after demand factors) for the heating and air conditioning? (Assume heater kW ratings equivalent to kVA)
A bulb having a rating of 220 volts, 75 watts is to be connected to a 110 volts source. What power it draw if connected across 110 volts source? NEED ONLY NEAT HANDWRITTEN SOLUTION NO CHAT GPT
A 100-W driveaway light bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used. estimate the annual cost to operate the bulb. * Draw the diagram
Is 5222 watts power rated equipment work if it is connected to a wire size no.6? Let voltage source =240 volts.
For ballpark calculations, the wattage output of a 240-volt electric furnace connected to a 208-volt supply will be approximately 75% of the wattage output had the furnace been connected to a 240-volt supply. In problem 13, calculate the wattage output of (a), (b), and (c) if connected to 208 volts. ____________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________
You are an electrician working in an industrial plant. The company is constructing a maintenance shop located 225 feet from the main plant electrical system. You are to install a 400-ampere three-phase wire system in the new maintenance shop. The service is supplied by the existing plant service. The voltage is 480 volts and the voltage drop is to be kept at 3% or below at full load. The conductors are to be aluminum. Determine the wire size needed for the 400-ampere service in accordance with the National Electrical Code. Assume that the conductors have type THWH insulation. (Note: As a general rule, for each 100 feet of conductor length the wire size is increased one standard size because of voltage drop.)
(c) Sketch a circuit diagram of a complete power conversion circuit that would be used to connect a solar PV array to the grid. Briefly describe its operation, including mention of the types of power electronic switches that might be used along with their voltage/current ratings. Please solve this with in 1 hour
Explain each option & Choose the correct option. 4) The _ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total 5) What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight 6) You're evaluating the components of a multioccupancy building that won't have an on-site employee. To be compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water pump disconnect ..
Please answer all questions and give me a sample answers, 1- What determines the ampacity of a wire? 2- When armored cable is used, what protection is provided at the cable ends? 3-A 120-volt branch circuit supplies a resistive heating load of 10 amperes. The distance from the panel to the heater is approximately 140 ft. Calculate the voltage drop using (a) 14 AWG, (b) 12 AWG, (c) 10 AWG, (d) 8 AWG copper conductors. See 210.19(A), Informational Note No. 4 and 215.2(A)(3), Informational Note No. 2. 4-In problem 3, it is desired to keep the voltage drop to 3% maximum. What minimum size wire would be installed to accomplish this 3% maximum voltage drop? See 210.19(A), Informational Note No. 4 and 215.2(A)(3), Informational Note No. 2. 5-NEC 215.2, 220.61, 230.42, and 310.15(B)(7) state that the neutral conductor of a residential service or feeder can be smaller than the phase conductors, but only 6-The allowable ampacity of a 4 AWG THHN from Table 310.15(B)(16) is 95 amperes. What…
A 20 HP motor load takes 80 amperes over a feeder line with 0.05-ohm resistance per conductor. If the bus bar voltage is 220 volts, calculate the over-all efficiency in percentage