Concept explainers
For the case of double-circuit, bundle-conductor lines, the same method indicated in Problem 4.27 applies with r' replaced by the bundle’s GMR in the calculation of the overall GMR.
Now consider a double-circuit configuration shown in Figure 4.36 that belongs to a 500-kV, three-phase line with bundle conductors of three subconductors at 21 in. spacing. The GMR of each subconductor is given to be 0.0485 ft.
Determine the inductive reactance of the line in ohms per mile per phase. You may use

Trending nowThis is a popular solution!

Chapter 4 Solutions
POWER SYSTEM ANALYSIS+DESIGN-EBK >I<
- solve and show in detail all calculationsarrow_forwardProblem 1 Consider the following system. In the figure, y(t) denotes the voltage across the capacitor. u(t) 1+ R W L + 0000 y(t) C Y(s) (i) Find the transfer function H(s): = of the system. U(s) Now suppose, R 10 KQ, L = 0.5 mH and C = 10 μF. (ii) Find the poles and zeros. Is the system BIBO stable? (iii) Compute settling time, rise time, peak time and % overshoot of the step response of the system. What the steady-state output for unit step input?arrow_forwardA 3-phase, 52 H.P, 50 Hz, 6-Pole, Y- connected induction motor runs at a speed of 980 rpm.The motor is supplied from 380 V mains and it takes a rated current of 80 A at 0.8 p.f. If the total stator losses are 1.7 kW, determine: the air-gap power, rotor copper loss, friction and windage losses?arrow_forward
- 12-3) PDF, mean, & variance A random variable has the PDF shown in the figure. a) Find the numerical value of the parameter K. b) Write the numerical expression for the PDF. c) Find the probability that the random variable is negative. d) Find the mean of x, the expected value of x², and the variance of x. K Px(x) 3 Xarrow_forwardPlease show all stepsarrow_forward12-4) Gaussian random variable A Gaussian random variable has a mean value of 4 and a standard deviation of 3. Find the probability that the value of the random variable exceeds 16. Repeat for the probability that it is less than -2. The discussion of Marcum's Q function given in the lecture notes may be helpful.arrow_forward
- A transformer has a primary voltage of 240 V and a secondary voltage of 48 V. What is the turns ratio of this transformer?arrow_forwardmicroprocers and microcontrolerarrow_forwardDesign a counter to count-up from 2 to 7 using three of D Flip Flops (3) 3-Bit Count up (3 to 5) Using D Flip-Flop: The State Equation of D Flip-Flop: Q(t+1)=D(t) => Dn=Qn Present State D Flip-Flop Next State n Q2p Q1p Q0p 3 0 1 1 1 Q2n Q1n Q0n D2 D1 D0 0 0 1 0 0 4 1 0 0 1 0 1 1 0 1 5 1 0 1 0 1 1 01 1 D2-Sum(3,4) and don't care X-Sum(0,1,2,6,7) D1=Sum(5) and don't care X=Sum(0,1,2,6,7) D0=Sum(4,5) and don't care X=Sum(0,1,2,6,7) Using K-map to simplify the functions: D2=Q1+Q0' D1=Q1'QO DO=Q1' XOX XOX Q2 10 Q2 01 Q2 1xx Q0 QO Qo D2 Q2 >CK Q2 D1 Q1 BCD CK Q1 DO QF ►CK Q0 ☐ Present State Next State D Flip-Flop n Q2p Q1p Q0p Q2n Q1n Q0n D2 D1 D0 2 0 1 0 0 1 1 0 1 1 3 0 1 1 1 0 0 1 00 4 1 0 0 1 0 1 1 0 1 5 1 0 1 1 1 0 1 1 0 6 1 1 0 0 1 0 0 1 0 D2 D2=Sum(3,4,5), X=Sum(0,1,7) D1 Q2 1 Q1 1 0 ☑ 0 Qo D2=Q0+Q1' ✗ 0 Q1arrow_forward
- Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning
