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Name: _______________________________________________________________Date: _________________________Block:___
The Price of Energy
Practise calculating the cost of energy.
1. A meter reader determines that a business has
used 3550 kW
⋅
h of energy in two months. If
electricity costs 10¢ per kW
⋅
h, calculate the bill.
($355.00)
2. An electric heater draws 1100 W of power.
Electricity costs 8¢ per kW
⋅
h. How much does it
cost to operate the heater 3.0 h a day for 30 days?
($7.92)
3. A 730 W toaster and 1200 W electric frying pan
are plugged into the same 100 V outlet. How
much will it cost to operate the two appliances at
8¢ per kW
⋅
h if they are used for 20 h?
($3.09)
4. A toaster is used an average of 5.0 h a month.
The toaster draws 8.0 A of current from a 110 V
outlet. If electricity costs 8¢ per kW
⋅
h, how much
will it cost to operate the toaster for one year?
($4.22)
Mrs. N Gill
Science 9
Name: _______________________________________________________________Date: _________________________Block:___
5. A ceiling fan operates for 10 h every day for one week. The fan uses 120 V and has a current of
1.2A.
(a) What is the power of the fan?
(b) How much energy does the fan use in one week? Give your answer in kW•h.
(c) If electrical energy costs $0.067/kW•h, how much does it cost to operate the fan for one week?
6. In an average week, a student uses a 1200 W hair dryer for 30 min. If electrical power costs $0.06
kW•h, how much does it cost to use the hair dryer in an average week?
Mrs. N Gill
Science 9
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Related Questions
Calculate the assigned values in the circuits below.
E2 = ________ E3 = _________ E6 = _________ E9 = _________
E11 = ________ E13 = _________ RT = ________ R6 = __________
IT = _________ I5 = __________ I7 = _________ I10 = __________
PT = ________
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KVLLoop abfea: __________________________________________________Loop cdhgc: __________________________________________________Loop bcgfb: ___________________________________________________
arrow_forward
Direction. Answer each problem and show your solutions cleanly and clearly. Draw diagrams._______________________________________________________________________________________________________________________
arrow_forward
Electrical Engineering
Give correct answer
UPSs measured in ____________ and ______________. __________________ are what your system uses and ____________________________ are what UPS can deliver in a perfect world.
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f.1. Since the footing or foundation is generally part of the grounding electrode system, the _______electrode is one of the first electrodes installed.A. metal water pipeB. plateC. concrete-encasedD. ground ringf.2. When you're connecting the grounding electrode conductor to a metal water pipe as it enters a building,the connection must be made within _______ feet of the pipe's entrance to the building.A. 10B. 5C. 15D. 7f.3. Which National Electrical Code table is used for sizing grounding electrode conductors?A. Table 250.102(C)(1)B. Table 250.66C. Table 250.122D. Table 250.118(6)(a)
arrow_forward
Answer the following:
A) Type of clipper circuit per level of clipping.
1. ___________
2. ___________
3. ___________
B) Type of clipper circuit per non-linear devices used.
1. ___________
2. ___________
C) Other term for clipper circuit.
1. ___________
2. ___________
3. ___________
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___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.
arrow_forward
13. If an equipment bonding jumper is run external to a raceway, it must be less than _______ feet.A. 6B. 2C. 4D. 5
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With the top view as the reference, the current going out of the page is ________ while the current going into the page is ________.
arrow_forward
Answer each problem and show your solutions cleanly and clearly. Draw diagrams.__________________________________________________________________________________________________________
arrow_forward
To answer the question, type your answers in RED or paste the image of your handwriting solution
Given the circuit #1 presented above, answer the following questions:
Determine the value of the VD (voltage forward of the LED) for the LEDs RED, VDRED, GREEN, VDGREEN and BLUE, VDBLUE, when the current through the LEDs is 10mA,
VDRED = ____________ ; VDGREEN = ____________ ; VDBLUE = ____________
Is the LED in Circuit #1, connected in the way that will be lighting up or not – Justify your answer
Type your answer here
Calculate the value of the resistance Rled in Circuit #1, to ensure that a RED LED will have a current of 10 mA
Type your answer here or paste the image of your handwriting solution here
Calculate the value of the resistance Rled in Circuit #1, to ensure that a GREEN LED will have a current of 10 mA
Type your answer here or paste the image of your handwriting solution here
Calculate the value of the resistance Rled in Circuit #1, to ensure that…
arrow_forward
Find the value of unknown.
3:1 — 6:____
arrow_forward
Question 9
An FET is a
current
voltage
O voltage and current
__-controlled device.
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An enclosure, constructed so that moisture will not enter the enclosure under specific test conditions, is called “____”
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Assignment on Threaded jointsDue date:__________________ ___________________ ________________ Surname Given names IDA power line tower is erected to support a high-voltage power line (see figure below),which includes six phase conductors and three Earth shield wires. The tower isfabricated as a steel structure resting on four square supporting feet bolted to aconcrete foundation with four Anker bolts at each support (see figure below). Theresultant tension force FT from cables on each side of the tower is applied at point m,and can be at 60o to the horizontal plane (sagging downwards) if the tower is installedon a plane or at 30o to the horizontal plane pointed upwards if the tower is installed on ahilly landscape. The gusty wind load, which could be represented with a resultant forceof Fw is applied at the geometric centre of the tower n in any direction in the horizontalplane (see figure below) and tends to shift the tower sideways and topple it. In the caseof an accident when all…
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Find the value of unknown.
2:5 —___:15
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Req =_______________
Ceq=________________
Leq=________________
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If a recessed luminary without an integral junction boxes installed what extra wiring must be provided
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6.a. Extreme _______ may cause some nonmetallic conduits to become brittle and therefore moresusceptible to damage from physical contact.A. coldB. corrosionC. voltageD. heat6.b. Snap switches are permitted to be grouped or ganged in an enclosure provided the voltage between theadjacent snap switches does not exceed ___ V.A. 400B. 300C. 200D. 100
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2. Imagine that you're asked to install an auxiliary grounding electrode at the base of a lighting pole in aparking lot. This auxiliary grounding electrode will be connected to theA. lighting pole's electrical service equipment grounding conductor.B. electrical service's grounding electrode conductor.C. next lighting pole's auxiliary grounding electrode.D. lighting pole's neutral conductor.
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On site plans, all evevations are referenced from_.
A. The centerline of a street B. Ground level C. A bench mark D. A test boring
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______________1. It checks the ability or range of operations of the electronic components that be run in the system.
______________2. It assesses the ability of the electronic components to exchange information or can access data without any restriction.
______________3. It evaluates the ability of the part to meet the functional, mechanical, and electrical performance requirements.
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1.1 PV modules can be wired together in an array using ______ connections to increase voltage.
a. Terminating
b. Series
c. Parallel
d. AC
1.2 A PV module, also called a solar panel, is comprised of individual photovoltaic _______ wired and mounted together as an integrated unit.
a. Capsules
b. Compartments
c. Chips
d. Cells
1.3 A __________ system uses a storage system that stores the generated electricity so it can provide during times when the system’s panels are not receiving solar energy.
a. Direct coupled
b. Self regulating
c. Charge controlled
d. Indirectly connected
1. 4 __________ energy may have the potential to supply all of the world's energy needs, but at this time, it provides a very small percentage.
a. Coal
b. Natural Gas
c. Diesel
d. Solar
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QUESTION 9
When a ground wire is connected to an interior gas piping system and the underground portion of the gas pipe into the building is plastic, which of the following is (or are) true?
a
A.This would be approved by code as the gas pipe is only being bonded to the electrical system.
b
B.This installation would be approved by code, as the gas pipe is not a grounding electrode.
c
C.Both A and B
d
D.Neither A nor B
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Question 6 B
Thevenin’s Theorem RL
what VTH RTH
Full explain this question very fast solution sent me step by step
Not:- Text typing work only and Don't ignore any part all part work u
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It is measure of how much counter emf is generated in a circuit. ________
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Related Questions
- Calculate the assigned values in the circuits below. E2 = ________ E3 = _________ E6 = _________ E9 = _________ E11 = ________ E13 = _________ RT = ________ R6 = __________ IT = _________ I5 = __________ I7 = _________ I10 = __________ PT = ________arrow_forwardKVLLoop abfea: __________________________________________________Loop cdhgc: __________________________________________________Loop bcgfb: ___________________________________________________arrow_forwardDirection. Answer each problem and show your solutions cleanly and clearly. Draw diagrams._______________________________________________________________________________________________________________________arrow_forward
- Electrical Engineering Give correct answer UPSs measured in ____________ and ______________. __________________ are what your system uses and ____________________________ are what UPS can deliver in a perfect world.arrow_forwardf.1. Since the footing or foundation is generally part of the grounding electrode system, the _______electrode is one of the first electrodes installed.A. metal water pipeB. plateC. concrete-encasedD. ground ringf.2. When you're connecting the grounding electrode conductor to a metal water pipe as it enters a building,the connection must be made within _______ feet of the pipe's entrance to the building.A. 10B. 5C. 15D. 7f.3. Which National Electrical Code table is used for sizing grounding electrode conductors?A. Table 250.102(C)(1)B. Table 250.66C. Table 250.122D. Table 250.118(6)(a)arrow_forwardAnswer the following: A) Type of clipper circuit per level of clipping. 1. ___________ 2. ___________ 3. ___________ B) Type of clipper circuit per non-linear devices used. 1. ___________ 2. ___________ C) Other term for clipper circuit. 1. ___________ 2. ___________ 3. ___________arrow_forward
- ___________ is an Area on a device characteristic where the ratio between applied voltage and resulting current is constant.arrow_forward13. If an equipment bonding jumper is run external to a raceway, it must be less than _______ feet.A. 6B. 2C. 4D. 5arrow_forwardWith the top view as the reference, the current going out of the page is ________ while the current going into the page is ________.arrow_forward
- Answer each problem and show your solutions cleanly and clearly. Draw diagrams.__________________________________________________________________________________________________________arrow_forwardTo answer the question, type your answers in RED or paste the image of your handwriting solution Given the circuit #1 presented above, answer the following questions: Determine the value of the VD (voltage forward of the LED) for the LEDs RED, VDRED, GREEN, VDGREEN and BLUE, VDBLUE, when the current through the LEDs is 10mA, VDRED = ____________ ; VDGREEN = ____________ ; VDBLUE = ____________ Is the LED in Circuit #1, connected in the way that will be lighting up or not – Justify your answer Type your answer here Calculate the value of the resistance Rled in Circuit #1, to ensure that a RED LED will have a current of 10 mA Type your answer here or paste the image of your handwriting solution here Calculate the value of the resistance Rled in Circuit #1, to ensure that a GREEN LED will have a current of 10 mA Type your answer here or paste the image of your handwriting solution here Calculate the value of the resistance Rled in Circuit #1, to ensure that…arrow_forwardFind the value of unknown. 3:1 — 6:____arrow_forward
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SEE MORE QUESTIONS
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Recommended textbooks for you
- EBK ELECTRICAL WIRING RESIDENTIALElectrical EngineeringISBN:9781337516549Author:SimmonsPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK ELECTRICAL WIRING RESIDENTIAL
Electrical Engineering
ISBN:9781337516549
Author:Simmons
Publisher:CENGAGE LEARNING - CONSIGNMENT