What is the operating current with the new resistor added

Assignment Help Physics
Reference no: EM13320903

An electric motor is plugged into a standard 120V electrical service. At startup a current of 23.4A is measured. What is the back emf if an operating current of 5.4A is measured once the motor is operating at speed? If a resistor is added to limit the in-rush (starting) current to 10A. What vaule is needed and what is the operating current with the new resistor added.

Reference no: EM13320903

Questions Cloud

What is the intensity of the output beam : A beam of gamma rays from a distant galaxy is observed through two polarizing filters whose transmission axis is at a 45 degree angle relative to each other here on earth. What is the intensity of the output beam
Determine the force p that must be applied toi the cylinder : The tube is attached at B to a rigid plate that is itself attached at C to the bottom of an aluminum cylinder (E= 72 GPa) with a cross-sectional area of 250 mm^2.
At what point does another year of age reduce : Person #206 in the data set has the following characteristics: cigpric = 67.44, income = 6500, educ = 16, age = 77, restaurn = 0, white = 0, smoke=0. Compute the predicted probability of smoking for this person and comment on the result
Determine the required diameter of the thread : A nylon thread is to be subjected to a 10-N tension. Knowing that E=3.2 GPa, that the maximum allowable normal stress is 40 MPA, and that the length of the thread must not increase by more than 1%
What is the operating current with the new resistor added : An electric motor is plugged into a standard 120V electrical service. At startup a current of 23.4A is measured. what is the operating current with the new resistor added
Find the temperature of the mixture : 115 g of glass beads, originally at a temperature of 75.0 oC, are added to 85.0 g of ethyl alcohol which is at a temperature of -50.0 oC. find the temperature of the mixture when thermal equilibrium is reached
Calculate the outside and inside surface temperature : A cold room has walls constructed of 0.24 m brick on the outside, 0.15 m foam insulation in the middle and 1.6 cm of wood on the inside. Calculate the outside and inside surface temperature of the composite wall
What is the final speed of the object : An object is launched with an initial velocity of 8.0 m/s to the horizontal from 327cm above the ground level. What is the final speed of the object
Calculate the distance the car traveled : A car moves with an initial velocity of 5m/s and is subjected to a deceleration of 3m/s2 for 2 seconds. Calculate the distance the car traveled

Reviews

Write a Review

Physics Questions & Answers

  Evaluate the speed of the arrow as it leaves the bow

A 87 arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 78cm. Evaluate the speed of the arrow as it leaves the bow?

  What is the horizontal componet of the balls velocity

A ball rolls off a table with a horizontal velocity of 5 m/s If it takes 0.6 secs for it to reach the floor A. What is the verticle componet of the balls velocity just before it hits the floor? (use g= 10 m/s^2) B. What is the horizontal componet ..

  How high does the light ball rise after the two collisions

In a physics demonstration, two rubber balls are dropped down a tube towards the ground,with the lighter ball behind, How high does the light ball rise after the two collisions

  Find the greatest acceleration

Plutonium decays radioactively by emitting an alpha particle from its nucleus, If the alpha particle comes from the surface of the Plutonium nucleus, what is its greatest acceleration

  What is the distance between the charges

Two charges Q1 = 48 muC and Q2 = 88 muC are found to have a potential energy of 43 J . What is the distance between the charges?

  Calculate the skaters speed

A 54.0 kg ice skater is gliding along the ice, heading due north at 4.10 m/s. What is the minimum value of Ug that allows her to continue moving straight north

  Find the expected overall pulse height resolution

If this system is used with a detector with an intrinsic pulse height resolution of 4%, what will be the expected overall pulse height resolution

  What is the magnitude of the force between the two wires

Two long, straight, parallel wires of length 3.6 m carry parallel currents of 3.2 A and 0.9 A. What is the magnitude of the force between the two wires

  What are the persons resultant displacement

Assume you are 80cm from a plane mirror. What area of the mirror is used to reflect rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.60 mm.

  Illustrate what is the magnitude of its final displacement

A delivery truck travels 32 blocks north, 16 blocks east, and 26 blocks south. Assume the blocks are equal length. Illustrate what is the magnitude of its final displacement from the origin?

  Evaluate the acceleration of each object

Evaluate (a) the acceleration of each object, (b) the tension in the string, and (c) the coefficient of kinetic friction between m2 and the incline.

  What is the mass of the spaceship

A spaceship is visiting Planet X. While descending to the surface,its rockets produce 25 kN of upward thrust and the spaceship%u2019s speed decreases at a rate of 0.15 m/s2. What is the mass of the spaceship

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd