A DC generator feeds a load of current 20 A and voltage 220 V. Calculate the electrical motive force generated in the armature if it is known that the resistance of the armature is 0.02 Ω and the resistance of the field is 0.01Ω.

A DC generator feeds a load of current 20 A and voltage 220 V. Calculate the electrical motive force generated in the armature if it is known that the resistance of the armature is 0.02 Ω and the resistance of the field is 0.01Ω.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 3RQ

See similar textbooks

Related questions

Q: 8 Q 8 clear load up clk Figure QI

A: It is 8 bit up counter

Q: The flux linking to 200 turns coil changes from 2 mWb to 5 mWb in 1ms to 3 ms. Determine the induced…

Q: 4 What type of conversion is happening in a DC Generator. a. DC electrical energy to…

A: A DC generator is an electrical machine. Which convert mechanical energy into electricity.

Q: Iron losses in a DC machine are independent of variations in

A: The explanation is as follows.

Q: For the following circuit a. find flux in each leg of the magnetic circuit. b. find flux linkage for…

A: For the given magnetic circuit, i1=5 A, i2=8 A. Assuming no fringing effect, the depth of each…

Q: 10. A potential difference of 250 V is applied to a field winding at 15-C and the current is 5 A.…

A: First Calculate the resistance of winding at 15°C: R15=2505R15=50 Ω Now Calculate the resistance of…

Q: 7. An inductance of 2 henry and a resistance of 10 ohms are connected in series with and…

A: According to the question we have to find the value of the current and current at 0.1 sec.

Q: The induced electromotive force of a loop is 3.5 V and if the current is changed from 12 A to 13.5 A…

Q: Find the pull exerted on the plunger of an electromagnet when the total flux is 381 uWb. The…

Q: A coil of wire with an average length of 20 cm moves through a magnetic field. The flux is cut with…

A: The solution is given below

Q: An ignition coil having 10 000 turns has an e.m.f. of 8kV induced in it. What rate of change of flux…

A: Given values are - Number of turnsN=10000EMFE=8kV=8000Volt

Q: A certain winding made of copper has a resistance of 100 ohms at room temperature. If resistance…

Q: The terminal voltage of an alternator changes with the increase in load due to voltage drop on…

A: Given that terminal voltage in a alternator change with respect to.load with respect to voltage…

Q: When a magnetic circuit is saturated, explain two solutions that can be used so that the magnetic…

A: Magnetic saturation: When the current in a coil is increased, the magnetic field also strengthened.…

Q: a magnetic circuit with relative permeability 1200 fin the current I required to establish a flux…

A: Note : Length is not given so considering L = 1 m. Given data, Relative permeability μr=1200.…

Q: A four-pole dc generator has a wave-wound armature containing 48 slots with eight conductors per…

Q: 4. A d.c. generator running at 25 rev/s generates an e.m.f. of 150 V. Determine the percentage…

A: It is given that:

Q: If a loop is moving in a varying magnetic field then the voltage generated is: Select one: O a. Vemf…

A: FARADAY'S LAW: According to faraday's law, a change of magnetic flux linked to a coil induces an…

Q: What is the commutation process?

A: commutation process is related with the DC machine .

Q: A 5 turns of wire experiences two amperes. a) what is the mmf? b) what is the reluctance of the…

A: The relations are straight forward as solved

Q: A 6-pole lap-wound series motor is connected to a 250 V d.c. supply. The armature has 500 conductors…

A: Series DC Motor are for the most part utilized where high beginning force is required, and speed…

Q: Calculate the flux in a magnetic circuit that has a reluctance of 0.06, if the 2,500 turn exciting…

A: given data: Reluctance = 0.06 current I = 2.5 Turns N = 2500

Q: The field winding of a d.c. motor is connected to a 110V supply. At a temperature of 18°C, the…

A: Given: Voltage, V=110V At a temperature of 18°C, the current drawn is 0.575 A. T1=18° and I1=0.575A…

Q: Publem #5: The eddy current loss of a dc machine is 300 W when the flux per pole is 30 mWb and the…

A: According to the question we have to find the eddy current loss.

Q: The diagrams show three generators. Which are alternating current Generators? coil rotation soft…

A: According to the question we have discuss about the generating nature of the given generator…

Q: A 550-V series motor takes 112A and operates at 820 r/min when the load is 75hp. if the effective…

A: Given Data P1 = 75 hp Re = 0.15 ohm Ia1 = 112 A N1 = 820 rpm Ia2 = 84 A V = 550 V

Q: The full-scale deflecting torque of a 20 A moving-iron ammeter is 6 × 10³ N-m. What is the rate of…

A: The given problem is from measuring instruments. The detailed solution is given in the next step

Q: An iron circuit with a small 0.75 mm air gap is shown in Figure 1. A 6000 turn coil carries a…

Q: If the supply frequency of a certain electro-magnetic structure is doubled while the applied voltage…

A: The solution is given below

Q: The armature of a 60 Hz ac generator rotates in a 0.45 T B-field. The area of the coils is 0.06 m2.…

A: The solution is given below

Q: Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. The coil of a generator has an…

A: In this question we will find temperature of coil with given resistance value...

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Mathematical Modeling of Mechanical System

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

The voltage induced in a generator is 110 V when the armature rotates at 1100 r/min. What will the voltage be if the speed is increased to 1200 r/min? A generator operating at 1850 r/min develops a voltage of 130 V. What must be the speed of the generator for a voltage of 120 V?
Find the pull exerted on the plunger of an electromagnet when the total flux is 381 uWb. The diameter of the plunger is 2.54 cm. draw the diagram. Thanks
I need help answer all
A coil of wire with an average length of 20 cm moves through a magnetic field. The flux is cut with a speed of 7 x 102 m/s. If the generated voltage is 168 volts, what is the strength of magnetic field?
The reluctance of a non-magnetic circuit is 15 units. How much flux will be set up if surrounded by a coil 560 turns carrying a current of 3.2 Ampere? Draw the diagram for the question
A 255 V, DC lathe machine, (not a 2 pole machine) has armature resistance and series resistance are 0.150 and 1702 respectively. The motor has 25mWb flux per pole. The ratio of pole to parallel paths is unity. The product of this ratio and number of turns in armature section is 1000. When it runs light, it has a speed of 1200 rpm. If it runs at maximum load, it takes a current of 70A. (1) Which machine is this one, shunt or series ? Is machine lap wound or wave wound? (3) Calculate the no load back EMF. (4) Calculate the no load armature current. (5) Calculate the no load shunt current. (6) Calculate the current drawn by the machine. Calculate the variable losses on load. (8) Calculate the armature power when it runs light. (9) Calculate the stray losses when it runs light. (10) Calculate the full load armature current. (11) (12) (13) Calculate the full load back EMF. Calculate the Variable losses on maximum possible load. Calculate the armature power on maximum load. (14) Calculate…
The armature of a shunt generator has 0.08-ohm effective resistance. Each brush has an effective resistance of 0.02 ohm. The terminal voltage is 120 V while the current is 60 A. What is its efficiency?
Calculate the flux (mWb) in a rectangular core that is 8.0 mm by 7 mm if the flux density is 4.0 Tesla?
In the given circuit, if number of turns of coil is 125 and current is 2A, relative permeability of the core is 765 and mean length of core is 0.2m and cross section area of 0.01m2 , then the flux generated in the core is Select one: O a. 1.24mWb HO b. None of these O c.0.124mWb O d. 1.24 Wb
A 220 V d.c. series motor is taking a current of 40 A. Resistance of armature = 0.5 ohm and resistance of series field = 0.25 ohm. What is the voltage at the brushes ?
Magnetic field
The magnetic circuit of Figure shown has current 10 A in the coil of 1800 turns. Assume that all branches have the same cross section of 2 cm^2 and that the material of the core is iron with μr = 1500. Calculate magnetomotive force for the core.