The mechanical power output of an electric motor is 3.80 hp. The motor is connected to a 120 V source and is 95.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Determine the following. (a) current (in A) delivered to the motor A (b) energy (in MJ) delivered to the motor by electrical transmission in 3.30 h of operation MJ (c) the cost to run the motor (in dollars) for 3.30 h, if the electric company charges $0.110/kWh

The mechanical power output of an electric motor is 3.80 hp. The motor is connected to a 120 V source and is 95.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Determine the following. (a) current (in A) delivered to the motor A (b) energy (in MJ) delivered to the motor by electrical transmission in 3.30 h of operation MJ (c) the cost to run the motor (in dollars) for 3.30 h, if the electric company charges $0.110/kWh

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: A 0.836 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC…

A: Recall P=iεSo E= energy supplied by battery=Pt=iεtNow energy converted to KE=EηWhere η is efficiency

Q: Given the circuit, where the rate at which R1 is dissipating electrical energy is 20.0W. When the…

Q: For what value of E (in volts) will the current in the ammeter rea

Q: On average, an electric water heater operates for 2.00 h each day. A water heater typically draws…

Q: (A) (in A) f P Assume these parameter values: V = 6 volt and P = 15 W. (A) What is the electric…

Q: A typical cellular phone consumes an average of about 1.10 W of electrical power and operates on…

Q: Problem 3. The reading on the ammeter in figure below is 3.00 A, and the current runs from right to…

A: a) Apply the KVL rule in the lower loop. ∑Vlower=024 V−I1(3 Ω)−(1 Ω)IA=024 V−I1(3 Ω)−(1 Ω)(3…

Q: A 0.718 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC…

A: Given that:- Mass of toy car=m=0.718kg

Q: (a) What energy is dissipated by a lightning bolt having a 20,700 A current, a voltage of 117 MV,…

A: Given, current I = 20700 A Voltage V = 117 MV = 117 X 106 V Time t =1 ms = 1 x 10-3 s We know the…

Q: A 1050 W radiant heater is constructed to operate at 115 V. (a) What is the current in the heater…

A: a) We know that the formula of the power is given as P =VI where P is the power V is the voltage…

Q: A DC battery provides a constant current of I= 63mA. Assume the battery started with a voltage of…

Q: An all-electric car (not a hybrid) is designed to run from a bank of 12.0 V batteries with total…

A: given V=12 VP=8.2 kWsince,P=VII is the currentI=PVI=8200 watts12 VI=683 A

Q: The mechanical power output of an electric motor is 2.70 hp. The motor is connected to a 120 V…

A: Given : Output power (Po) = 2.70 hp = 2.70(746) = 2014.2 W Voltage (V) = 120 V Efficiency (e) = 82%…

Q: Suppose a motor connected to 117 V source draws 20.2 A when it first starts. (a) What is its…

A: current = voltage/resistance

Q: A 1300 W radiant heater is constructed to operate at 115 V. (a) What is the current in the heater…

A: Power, P=1300 W Voltage, V=115 V To determine(a) Current(b) Resistance(c) Thermal energy produced in…

Q: The ammeter shown in the figure below reads 2.68 A. Find the following. 7.00 Ω (a) current I₁ (in A)…

Q: Nichrome wire of cros0-sectional radius 0.777 mm is to be used in winding a heating coil. If the…

A: Given: Current, I =9.50 A Radius, r =0.777 mm Voltage, V =1.80×102 V

Q: If the power rating of a computer is 600W and the computer is plugged into a mains supply (230V),…

A: Given that:- Power rating of computer=600W Voltage supply=V=230Volt

Q: Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the…

Q: A cauterizer, used to stop bleeding in surgery, puts out 1.76 mA at 15.5 kV. (a) What is its power…

Q: A certain electric motor draws a current of 43 A when connected to 120 V. (a) What is the motor's…

Q: An electric winch operates on 170 volts [V] and draws 3 amperes [A] of current. The winch has an…

A: Given Data: Voltage V=170 volts Current I=3 A Efficiency of Winch η=66% Weight to be lifted W=520…

Q: A load of 1000 kg is to be lifted at a rate of 10 m/minute with the help of motor operating at 240 V…

Q: An engineer built the circuit depicted in the figure. Assuming & = 8.10 V and R = 6.00 , find the…

Q: Find the power (in W) dissipated in each of these extension cords. (a) an extension cord having a…

A: Power dissipation: When the current flows through the electronic device or the conductor the energy…

Q: The ammeter shown in the figure below reads 2.20 A. Find the following. 15.0 V 7.000 WF (a) current…

A: ammeter reads 2.20 A

Q: A 120-V motor has mechanical power output of 2.20 hp. It is 85.0% efficient in converting power that…

A: a) The required current in the motor is,

Q: The ammeter shown in the figure below reads 2.80 A. Find the following. 15.0 V 7.00 Ω www (a)…

A: current is given as : I=2.80A.

Q: The

Q: Given the circuit, where the rate at which R1 is dissipating electrical energy is 20.0 W. When the…

A: Given, An electric circuit

Q: An electric utility company supplies a customer's house from the main power lines (120 V) with two…

Q: The mechanical power output of an electric motor is 3.40 hp. The motor is connected to a 120 v…

A: Given values, Mechanical power output, Pm=3.40 hp=3.40×745.7=2535.38 Watt=2.54 KW Voltage source,…

Q: A load of 1000 kg is to be lifted at a rate of m/minute with the help of motor operating at 240 V…

Q: A load of 1000 kg is to be lifted at a rate of 10 m/minute with the help of motor operating at 240 V…

Q: An x-ray tube used for cancer therapy operates at 4.0 MV, with a beam current of 25 mA striking a…

A: Write the expression for the power and substitute the required values.

Q: A 0.364 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC…

A: kinetic energy of car =12mv2=12×0.364×2.352=1.005095 Joules If E is the energy suplied by the…

Q: The mechanical power output of an electric motor is 2.40 hp. The motor is connected to a 120 V…

A: Given Values, The power output of the motorP0=2.40 hp The voltage across the motor(V)=120 V The…

Q: The ammeter shown in the figure below reads 2.32 A. Find the following. (a) current I₁ (in A) 0.485…

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

Q: A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t…

A: Given that,Vrms=240Vit=0.707 ASin 125.6 Hztwe know, I=I0Sinωtcomparing equation , we will get…

Q: Thermal energy is produced in a resistor at a rate of 112 W when the current is 3.63 A. What is the…

Q: water

Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

100%

The mechanical power output of an electric motor is 3.80 hp. The motor is connected to a 120 V source and is 95.0% efficient in converting power that it takes in by electrical
transmission into mechanical power. Determine the following.
(a) current (in A) delivered to the motor
A
(b) energy (in MJ) delivered to the motor by electrical transmission in 3.30 h of operation
MJ
(c) the cost to run the motor (in dollars) for 3.30 h, if the electric company charges $0.110/kWh

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: Given data

VIEW

Step 2: Calculation for input power.

VIEW

Step 3: Calculation for current delivered to the machine.

VIEW

Step 4: Calculation for energy delivered to the machine.

VIEW

Step 5: Calculation for total cost to run the machine for given amount of time.

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 6 steps with 32 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, physics and related others by exploring similar questions and additional content below.

Similar questions

(a) What energy is dissipated by a lightning bolt having a 21,800 A current, a voltage of 110 MV, and a time duration of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water with a specific heat of 4184 J/(kg · °C) and a latent heat of vaporization of 2256 x 103 J/kg? kg
Problem 4: Find the power dissipated (in W) in each of the following extension cords: Part (a) An extension cord having a 0.095 Ω resistance and through which 5.00 A is flowing. Part (b) A cheaper cord utilizing thinner wire and with a resistance of 0.36 Ω through which 5.00 A is flowing.
CASE #2: In a food factory, a production line is used to package foodcanned. The production line is made up of several machines, such as a filling machine,a labeling machine, a sealing machine, among others.The filling machine is equipped with a 5 HP three-phase electric motor and is powered by a240 V three-phase power supply. The machine is protected by an overload relaythermal switch that is configured to protect the motor against electrical overloads.One day, during the normal operation of the production line, a jam occurs in the machinefiller. As a result, the electric motor begins to draw more electrical current thannormal to try to overcome the jam. The thermal overload relay detects the increase inelectrical current and, after a certain time, activates the disconnection mechanism toprotect the engine from damage.After clearing the jam, the operator restarts the electric motor. Like overload relaythermal is still in activation state, it does not allow the engine to start, since…
A load of 1000 kg is to be lifted at a rate of 10 m/minute with the help of motor operating at 240 V and requiring a current of 10 A. The overall efficiency of the system is (Take g = 10 ms-²) (a) 48.6% (c) 74.8%) (b) 69.4% (d) 92.6%
the heating element of an electric cooker operates at 230.0V and carries a current 4.20 A. Assuming the watwr absorbs all the energy from the resistor, how much water (in kilograms) can it heat a room temperature of 23°C to the boiling point in 5 minutes? The specific heat of water is 4186 J/(kg°c)
ASAP
The generator at a large power plant has an output of 2,000,000 kW at 23,000 V. (a) If it were a DC generator, what would be the current in it? A (b) What is its energy output each day-in joules and in kilowatt-hours? kWh (c) If this energy is sold at a price of 10 cents per kilowatt-hour, how much revenue does the power plant generate each day? %24 Need Help? Road It Watch It
Nichrome wire of cross-sectional radius 0.764 mm is to be used in winding a heating coil. If the coil must carry a current of 9.75 A when a voltage of 2.70 × 102 v is applied across its ends, find the following. (a) the required resistance of the coil (b) the length of wire you must use to wind the coil m
Nichrome wire of cross-sectional radius 0.795 mm is to be used in winding a heating coil. If the coil must carry a current of 9.00 A when a voltage of 3.00 × 102 V is applied across its ends, find the following. (a) the required resistance of the coil (b) the length of wire you must use to wind the coil m
(a) What energy is dissipated by a lightning bolt having a 21,000 A current, a voltage of 121 MV, and a time duration of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water with a specific heat of 4184 J/(kg · °C) and a latent heat of vaporization of 2256 x 103 J/kg? kg
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, each of which is 68.0 m long and has a resistance of 0.103 per 300 m. (a) Find the potential difference at the customer's house for a load current of 119 A. V (b) For this load current, find the power delivered to the customer. kW (c) Find the rate at which internal energy is produced in the copper wires. W
Asap d e f within 20 minutes