The following figure shows the cross-section structure of a 4/2 pole variable reluctance motor with dimensions as R=3.8 cm, α=60o, β=45o , g=0.254 mm, and D=13 cm. The poles of each phase winding are connected in series such that there are a total of N=100 turns (50 turns per pole) in each phase winding. Assume that rotor and stator to be of infinite magnetic permeability. Plot the torque, assuming (i) i1=I1 and i2=0; and (ii) i1=0 and i2= I2

The following figure shows the cross-section structure of a 4/2 pole variable reluctance motor with dimensions as R=3.8 cm, α=60o, β=45o , g=0.254 mm, and D=13 cm. The poles of each phase winding are connected in series such that there are a total of N=100 turns (50 turns per pole) in each phase winding. Assume that rotor and stator to be of infinite magnetic permeability. Plot the torque, assuming (i) i1=I1 and i2=0; and (ii) i1=0 and i2= I2

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Capacitors

Section: Chapter Questions

Problem 1RQ: 1. What is the dielectric?

See similar textbooks

Similar questions

Inductive Circuits Fill in all the missing values. Refer to the following formulas: XL=2fLL=XL2ff=XL2L Inductance (H) Frequency (Hz) Inductive Reactance ( ) 1.2 60 0.085 213.628 1000 4712.389 0.65 600 3.6 678.584 25 411.459 0.5 60 0.85 6408.849 20 201.062 0.45 400 4.8 2412.743 1000 40.841
Capacitive Circuits Fill in all the missing values. Refer to the formulas that follow. XC=12fCC=12fXCf=12CXc Capacitance XC Frequency 38 F 60 Hz 78.8 400 Hz 250 pF 4.5 k 234 F 10 kHZ 240 50 Hz 10 F 36.8 560 nF 2 MHz 15 k 60 Hz 75 nF 560 470 pF 200 kHz 6.8 k 400 Hz 34 F 450
If a capacitor produces 15 ampere on a 240-volt supply, which of the following is its microfarad rating? 166 microfarad 15 microfarad 200 microfarad 3450 microfarad
1. What is the dielectric?
A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
Fill in all the missing values. Refer to the formulas that follow. Resistance Capacitance Time constant Total time 150 k 100 F 350 k 35 s 350 pF 10 s 0.05 F 1.2 M 0.47 F 12F 0.05 s 86 k 1.5 s 120 k 470 pF 250 nF 100 ms 8 F 150 s 100 k 150 ms 33 k 4 F =RCR=CC=R Totaltime=5
Q26 Inductance can be measured using Wheatstone bridge True False
Two conducting spherical shells have radii a= 2 cm (inner), and b= 5 cm (external). The interior is a perfect dielectric for which ɛR 10. The value of capacitance between the two plates equals to 1) 37.37 pF 2) 55.55 pF 3) 74.074 pF 4) 18.52 pF
Inductance with an air-core toroid with an average radius of 10 mm and a cross-sectional area of 10 mm2 How many turns must be wound to obtain a coil with a value of 0.4 mH? Same inductance value Is a replacement solenoid possible? Please explain.
Solve for the (and refer to the image): 1. equivalent capacitance on the circuit 2. total change 3. individual volatge 4. individual charges
An ac voltage source is connected across the plates of a parallel-plate capacitor so that E = 25sin(103t)az V/m. Calculate the total current crossing a 2 x 5 m area placed perpendicular to the electric field. Assume that the capacitor is air filled.
The greater the Permittivity of the Dielectric, the greater the Capacitance Select one: True False