Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 4, Problem 11SQ
To determine
Choose which type of switch (normally open or normally closed) would be installed for float switch in Figure 4-12.
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Can you please help me with this problem?
Consider the following transformer circuit assuming an ideal transformer. In this circuit
the signal generator will provide a 10-Volt peak-to-peak sinusoidal signal at a frequency
of 1.0 kHz. Assume that L₁ = 0.65 H, L2 = 0.00492 H (=4.92 mH) and that the coupling
constant = 0.99925.
+
VG1(
R1 1k
N1:N2
11.5:1
12
V1 N1
N2
V2
R2 8.2
1) Find the following using the theory presented in the prelab reading:
a) Start with Equations (2) of the prelab reading and show that the input impedance
to an ideal transformer is given by the equation for Z1 (=V1/11) in Equations (4) of
the prelab reading.
Equations (2) are: V₁ = joLI₁ + jœMI₂ and V₂ = j@MI₁ +j@L₂I₂
The equation for the input impedance is: Z₁ = 1½ = jwL₁ +
(WM)²
jwL₂+ZL
b) Assuming that Z is a real impedance, find the equations for the real and
imaginary parts of Z1.
c) Use your equations from part (b) to calculate the value of the input impedance
(Z) at an operating frequency of 200 Hz. Assume that the load impedance is 8.2
Ohms…
Use: R1 = 1.5K, R2 = 5K, R3 = 1K, R4 = 2K, R5 = 2K, R6 = 1K.
40%: Find the value for Vs (in V) such as IR2 = 1mA.
40%: Find the voltage VD.
20%: simulate the circuit in Falstad (attach the link).
A
1,5k
B
R1
Vs
L
5k
P2
R2
R6
E
C
R3
С
IR2= 1mA
D
H4
R4
2k
2k
R5
Chapter 4 Solutions
Electric Motor Control
Ch. 4 - Identify the following symbols.Ch. 4 - Electrical symbols usually conform to which...Ch. 4 - What do the following abbreviations stand for? a....Ch. 4 - Single-pole and double-pole switch symbols are...Ch. 4 - The symbol shown is a a. polarized capacitor. b....Ch. 4 - The symbol shown is a a. normally closed float...Ch. 4 - The symbol shown is a(n) a. iron core transformer....Ch. 4 - The symbol shown is a a. normally open pressure...Ch. 4 - The symbol shown is a a. double-acting push...Ch. 4 - If you were installing the circuit in Figure 412,...
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- The joint pdf of random variables X=1, 2 and Y=1,2,3 is Y P(X,Y)= X [0.105 0.2 0.15] 0.151 0.18arrow_forwardFind the eigenvalues and the corresponding eigen vectors of the following matrix: -5 A = [ 21 -7 4]arrow_forward+ 2) Acircuit is given as shown. (a) Find and label the circuit nodes (6) Determine voltages V₁, V2, V3 and Vy 4V C/E 노동 + 051 V4 + C/E + 3V- + /E5V 1 av + C E uk لا + V3C/E CIE + E6V -arrow_forward
- Consider the following transformer circuit assuming an ideal transformer. In this circuit the signal generator will provide a 10-Volt peak-to-peak sinusoidal signal at a frequency of 1.0 kHz. Assume that L₁ = 0.65 H, L2 = 0.00492 H (=4.92 mH) and that the coupling constant = 0.99925. + VG1( R1 1k N1:N2 11.5:1 12 V1 N1 N2 V2 R2 8.2 1) Find the following using the theory presented in the prelab reading: a) Start with Equations (2) of the prelab reading and show that the input impedance to an ideal transformer is given by the equation for Z1 (=V1/11) in Equations (4) of the prelab reading. Equations (2) are: V₁ = joLI₁ + jœMI₂ and V₂ = j@MI₁ +j@L₂I₂ The equation for the input impedance is: Z₁ = 1½ = jwL₁ + (WM)² jwL₂+ZL b) Assuming that Z is a real impedance, find the equations for the real and imaginary parts of Z1. c) Use your equations from part (b) to calculate the value of the input impedance (Z) at an operating frequency of 200 Hz. Assume that the load impedance is 8.2 Ohms…arrow_forwardHANDWRITTEN SOLUTION PLEASE NOT USING AIarrow_forwardFor the network of Fig. 7.93, determine: a. ID, and VGS₂- 18 V b. Vps and Vs. Shockley's equation, VGS ID= Vp) ID Vos V 1- VIDSS VGSQ VG = R₂VDD R₁ + R2 VGS VG-IDRS VDS VDD-ID(RD + Rs) (a) ID = 9 mA, VGS₁ = 0.5 V (b) VDs = 7.69 V, Vs = -0.5 V • 2.2 ΚΩ Dss = 8 mA Vp=-8V • 0.39 ΚΩ 8-4 V FIG. 7.93arrow_forward
- 4-9 A separate excited dc generator turning at 1400 r/min produces an induced voltage of 127 V. The armature resistance is 2 and the machine delivers a current of 12 A. Calculate a. the terminal voltage [V] b. the heat dissipated in the armature [W] c. the braking torque exerted by the armature [N-m]arrow_forward1. Label the x, y, z coordinates for each frame. 2. Compute the homogeneous transformation matrices H between frames 0, 1, 2, and end- effector. 3. Use your MATLAB function to compute H°3. 01 d₁ d 02 d3arrow_forward4-8 Explain the difference between shunt, com- pound, and differential compound generators a. as to construction b. as to electrical propertiesarrow_forward
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