Answered: A dc motor with its rotor and field… | bartleby

Related questions

Question

A dc motor with its rotor and field coils connected in series has an internal
resistance of 2.00 Ω. When running at full load on a 120 V line, it
draws a 4.00 A current. What is the rate of dissipation of energy
in the internal resistance?

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

Suppose the emf of the battery in the circuit varies with time t so that the current is given by i(t) 3.0 + 5.0t, where i is in amperes and t is in seconds.Take R = 4.0 ohm and L = 6.0 H, and find an expression for the battery emf as a function of t. (Hint: Apply the loop rule.)
What direct current in A will produce the same amount of thermal energy, in a particular resistor, as an alternating current that has a maximum value of 7.2 A?
A person with body resistance between his hands of10 kΩ accidentally grasps the terminals of a 14 kV power supply. What is the power dissipated in his body?
The motor in a toy car operates on 6.00 V, developing a 4.70 V back emf at normal speed. If it draws 3.00 A at normal speed, what current (in A) does it draw when starting? ____________ A
Most household power in North America is 120? alternating current (VAC). However, some high-power appliances such as electric ranges and clothes dryers typically require a special 220?circuit. In this problem, you will calculate the energy, power, and current required by a dryer. You will also compare different methods of storing the energy required to run this appliance in a typical drying cycle. Consider a dryer that operates on 220?electricity, and it consumes an average power of 3000?. For this homework, the “Alternating Current” part of the story is irrelevant, so please use our ordinary DC equations (Perhaps this dryer has been specially made for physics experiments so it has a second input that allows it to operate on DC voltage as well!) A cubic meter of “natural gas” (mostly methane) at atmospheric pressure contains about40?? of usable energy. How much natural gas (in m3) would it take to power the dryer for 30minutes? Do some googling, and make an estimate (that means getting…
Let's say you have a 30W lightbulb that operates on a 120V alternating current. When the light is on the temperature is 2473 celsius. What would be the resistance at 2066 celsius? Note that the temperature coefficient α=4.5x10^-3/celsius
A dc motor with its rotor and field coils connected in series has an internalresistance of 2.00 Ω. When running at full load on a 120 V line, itdraws a 4.00 A current. What is the power delivered to the motor?
A galvanometer has a coil resistance of Rgaly I = 2.55 A. If the galvanometer deflects full scale for a current of Igalv 45.2 Q. It is to be made into an ammeter with a full-scale deflection equal to 175 mA, what size shunt resistor should be used? size of shunt resistor: Ω
A 1·21-MF Capacitor is connected to a North American electrical outlet. (AVrms = 120V₁ f = 60.0Hz). Assuming the energy stored in the Capacitor is Zero at + = 0, determine the magnitude & the current in the wires at t = 192 Note: Answer must be in A. S.
In the figure R₁ = 9.42 kQ, R₂ = 15.7 kQ, C = 0.439 µF, and the ideal battery has emf & = 18.0 V. First, the switch is closed a long time so that the steady state is reached. Then the switch is opened at time t = 0. What is the current in resistor 2 at t = 4.10 ms? Number Units R₁ R₂ C
A coil of 40 mH is crossed by a current of 2 A. The coil is connected to a resistance of 25 while the current is falling. (a) What is the time constant t of the circuit? (b) What is the current in the coil after a time of 1.6 ms? (c) What is the voltage across the resistor after 1.6 ms? (d) What is the voltage across the coil after 1.6 ms?
B9