EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 31, Problem 6R
To determine
Choose the right option from the given choices to find the minimum bending radius of the coaxial cable.
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A DC distributor cable is 1,000 m long and is loaded under:
Distance from the feeding point “A” in meters. 250m 750m 1000m
Load in amperes 100A 200A 300A
The resistance of each conductor is 0.025 ohm/km.. Find the voltage at each load point if the voltage at the feeding point A is maintained at 250V.
I need the answer as soon as possible
Chapter 31 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
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- Can you do it on a paper. Thank youarrow_forwardA two wire DC distributor AB, 1000 meter long, is supplied from both ends, 240 V at A and 242 V at B. There is a concentrated load of 200 A at a distance of 400 meter from A and a uniformly load 1.0 A/m between the midpoint and end B. Determine (i) the current fed at points A and B (ii) the point of minimum potential and (iii) voltage and this point. Consider cable resistance as 0.005 ohm per 1000 meter each core.arrow_forwardQ1-A cable composed of 2mm diameter conductor covered with 1mm insulating material is found to have an insulation resistance of 480M22/Km. What thickness of similar material would be required for 3mm diameter conductor in order to have an insulation resistance of 960MS/Km? Q8-In a 2-pole d.c machine the winding of the armature is: a-Double layer lap winding. b- Double layer wave winding. C- Single layer lap winding. d- Single layer wave winding. Q11-In a single phase power transformer. the secondary current is a function of the primary or the primary is a function of the secondary explain with the aid of diagrams. Q19-An inductor of 0.5H inductance and 902 resistance is connected in parallel with a 20μF capacitor. The resonance frequency will be: a-316 rad/Sec. 260 rad/Sec. 1 - CR Lº c-92 rad/Sec. 2 2- Tec √I-CR² Q20- L a-Suggest a control gate derive circuit for a triac, which is used to control a fan regulator. The gate signals should be synchronized with the input voltage. 0.822…arrow_forward
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- 3. A two conductor main A B, 500 m in length is fed from both ends at 250 volts. Loads of 50 A, 60 A, 40 A and 30 A are tapped at distance of 100 m, 250 m, 350 m and 400 m from end A respectively. If the X- section of conductor be 1 cm and specific resistance of the material of the conductor is 1-7 u 2 cm, determine the minimum consumer voltage.arrow_forwardQ4) A 2-wire d.c. distributor cable AB is 2 km long and supplies loads of 100A,150A,200A and 50A situated 500 m, 1000 m, 1600 m and 2000 m Trom the feeding point A. Each conductor has a resistance of 0-01 2 per 1000 m. Calculate the voltage at each load point if a voltage of 300 V is maintained at point A.arrow_forwardA 2-wire d.c. ring distributor is 300 m long and is fed at 240 V at point A. At point B, 150 m from A, a load of 120 A is taken and at C, 100 m in the opposite direction, a load of 80 A is taken. If the resistance per 100 m of single conductor is 0.030. find: (i) current in each section of distributor (ii) voltage at points B and C.arrow_forward
- H. W.: The cost of a 2-core feeder cable, including installation is (90 a + 20) per meter and the interest and depreciation charges are 10 per cent. The cable is 2 km in length and cost of energy is 4% per unit. The maximum current in the feeder is 250 A and the demand is such that the current copper loss is equivalent to what would be produced by the full flowing for 6 months. If the resistance of a conductor of 1 square cm and 1 km length is 0.173 Q, calculate the most economical cross-sectional area.arrow_forwardb) Explain why the effective length is less than the lotal length of a laminated armature .Which value should be used for L in Ecotl DLN»B and Trol- NDLIcoB? Which value should be used in resistance calculations?arrow_forwardwhen installing coaxial cable the minimum bending radius generally recommended isarrow_forward
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