What current does it draw at normal operating speed

Assignment Help Physics
Reference no: EM13279059

A dc motor is connected to a constant emf of 13.9 V. The resistance of its windings is 2.0 ?. At normal operating speed, the motor delivers 6.7 W of mechanical power.

(a) What is the initial current drawn by the motor when it is first started up?

A

(b) What current does it draw at normal operating speed?

A

(c) What is the back emf induced in the windings at normal speed?

V

Reference no: EM13279059

Questions Cloud

What is the probability of all three manufacturing lines : 1. Your firm has 3 different manufacturing lines that each produce the same type of widget. There is a 85 percent chance that each line is functional on any given day. Assuming a Bernoulli process what is the probability of all three manufactu..
How many more payments would we need to give : Furthermore, if we had enough after 3 years, how much do we need to give the lender to amortize? If we gave the lender 2,000 in addition to our regular amount after 4 years, how many more payments would we need to give?
Design a logic probe that indicates the logic state of node : Design a Logic Probe that indicates the logic state of a node of any TTL circuit using two LEDs (a red one, and a green one). The probe must work with the same power of the circuit that you want to analyze: same Vcc and same GND.
Compute the mass of nitrogen dissolved at room temperature : Calculate the mass of nitrogen dissolved at room temperature in an 76.0L home aquarium. Assume a total pressure of 1.0atm and a mole fraction for nitrogen of 0.78.
What current does it draw at normal operating speed : A dc motor is connected to a constant emf of 13.9 V. The resistance of its windings is 2.0 ?. What current does it draw at normal operating speed
Why are liquidity ratios for utility and fast food companies : Based on these ratios, what is your advice? If another student makes different suggestions, challenge them to justify their choices.
What is the current when the motor is at full speed : A dc motor has coils with a resistance of 13 ? and is connected to an emf of 120.0 V. When the motor operates at full speed, the back emf is 72 V. What is the current when the motor is at full speed
Explain the ground-state electron configurations : Write the ground-state electron configurations for the following elements. (Type your answer in noble gas notation using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.)
Should he buy the equipment : The value you obtain will apply to each of the six years. 2. what is the expected net present value? 3. should he buy the equipment? why or why not?

Reviews

Write a Review

Physics Questions & Answers

  What was the reduction in the mechanical energy

A 62 g Frisbee is thrown from a point 1.3 m above the ground with a speed of 15 m/s. What was the reduction in the mechanical energy of the Frisbee-Earth system because of air drag

  Write the amperes law for a path

Write the Ampere's Law for a path that surrounds both conductors

  What is the voltage across the capacitors

what is the voltage across the capacitors?

  Find out the distance travelled using the equation

When he reaches equator, the sphere is rotating at how many rpm. A car takes 9 s to go from v = 0 to v = 55 m/s at about constant acceleration.

  Find the downward acceleration of m2 mass

The string connecting the m1 and the m2 passes over a light frictionless pulley. Given m1 = 1.77 kg, m2 = 7.24 kg, m3=2.23 kg, and g = 9.8 m/s2. The acceleration of gravity is 9.8 m/s2 . Find the downward acceleration of m2 mass.

  What is the final velocity of the electron

A parallel-plate capacitor is formed from two 9.10cm x 9.10cm electrodes spaced 2 mm apart. The electric field strength inside the capacitor is 5.00*10^6 . What is the charge (in nC) on each electrode ?What is the final velocity of the electron.

  What is the energy range of photons

What is the energy range (in joules) of photons of wavelength 400nm to 760nm

  What is magnitude of the difference in frequency

What is magnitude of the difference in frequency

  Calculate the maximum height after the elastic collision

Two blocks are free to slide along the frictionless wooden track shown below. The block of mass m1 = 5.02 kg is released from the position shown, Calculate the maximum height to which m1 rises after the elastic collision

  Find the mass of this volume of lead

A piece of wood is 0.600m long, 0.210m wide, and 0.08 m thick. Its density is 600kg/m3. find the mass of this volume of lead

  What is the radius of curvature of the mirror

What is the radius of curvature of the mirror. How far would it coast before starting to roll back down.

  Find out the acceleration in this situation at the moment

It continues to fly along the same horizontal arc, but increases its speed at the rate of 1.45 m/s2. Find out the acceleration in this situation at the moment the hawk's speed is 4.60 m/s.

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