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For problems 1-5 below, use the autotransformer diagram below. The transformer is wired...
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances...
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances of the primary side and secondary side of the transformer are 1.092 and 0.252 respectively. If the no load losses of the transfomer is given by P-Vã 4800 W where Vn is the input voltage of the transformer in Volt. Answer the following: a) Calculate transformer efficiency b) Do you allow this transformer to be connected to 240V 50Hz distribution system? Explain. c What...
solve no: 3.14 , 3.16, 3.19 please show each step and solve for beginners 120 Power...
solve no: 3.14 , 3.16, 3.19
please show each step and solve for beginners
120 Power System Analysis 3.12. A single-phase system similar to that shown in Figure 3.11 has two transformers A-B a B-C connected by a line B feeding a load at the receiving end C. The ratings and parame ter values of the components are 500 V/1.5 kV, 9.6 kVA. leakage reactance 5 % 1.2 kV/120 V, 7.2 kVA, leakage reactance 4 % series impedance (0.5 +...
a) Discuss the main role of per-unit systems. (CO3:P01 - 3 marks) b) A single phase...
a) Discuss the main role of per-unit systems. (CO3:P01 - 3 marks) b) A single phase two winding transformer rated at 20 kVA, 415/230 volts 50 Hz is subjected to open and short circuit test. Table Q3 (a) summarize the results of the test; Table Q3 (a) Open Circuit Test 12 = 12 A P2 = 200 W Short Circuit Test V1 = 35 V P1 = 300 W I. Based on the short circuit test, determine the equivalent series...
what information needed? 3. Repeat Example 7.8, using a 100 kVA transformer and #3/0 AWG and...
what information needed?
3. Repeat Example 7.8, using a 100 kVA transformer and #3/0 AWG and #2 AWG cables for the SLs and SDs, respectively Show the procedure to arrive at the following answers (a) 0.72 pu A (b) 0.050 pu V Example 7.8 residential secondary distribution system. Assume that the distribution trans- Figure 7.11 shows former capacity is 75 kVA (use Table 7.1), all secondaries and services are single-phase three wire, nominally 120/240 V, and all SLs are of...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single phase equivalent of the three phase Wye. All three representations have a complex load ZALD or ZYLD and a complex line impedance ZLINE Refer to these diagrams when answering questions 1-4. ZLINE Vab= 679 L 30° ZLINE ZALD ZLINE = 2+1 DELTA ZALD= 18+24j2 LINE ZLINE ZLINE ZYLD 7yun WYE WYE ZYLD ZLINE ZLINE Van Complex Load ZYLD Single Line WYE 1) In the...
Hi, Can you please solve these problems. For the information below to answer Questions 1-5. An...
Hi, Can you please solve these problems. For the information below to answer Questions 1-5. An electronic flashgun has a 2500 μF electrolytic capacitor charged to 300 V and a current-limiting 10 kΩ resistor and. If the lamp resistance is 10 Ω: Question 1 Find the peak charging current [2] 1) 30 A 2) 15 mA 3) 30 mA 4) 20 A Question 2 Find the time required for the capacitor to fully charge (Hint: an electronic flash unit is...
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances of the primary side and secondary side of the transformer are 1.092 and 0.252 respectively. If the no load losses of the transfomer is given by P-Vã 4800 W where Vn is the input voltage of the transformer in Volt. Answer the following: a) Calculate transformer efficiency b) Do you allow this transformer to be connected to 240V 50Hz distribution system? Explain. c What...
solve no: 3.14 , 3.16, 3.19
please show each step and solve for beginners
120 Power System Analysis 3.12. A single-phase system similar to that shown in Figure 3.11 has two transformers A-B a B-C connected by a line B feeding a load at the receiving end C. The ratings and parame ter values of the components are 500 V/1.5 kV, 9.6 kVA. leakage reactance 5 % 1.2 kV/120 V, 7.2 kVA, leakage reactance 4 % series impedance (0.5 +...
a) Discuss the main role of per-unit systems. (CO3:P01 - 3 marks) b) A single phase two winding transformer rated at 20 kVA, 415/230 volts 50 Hz is subjected to open and short circuit test. Table Q3 (a) summarize the results of the test; Table Q3 (a) Open Circuit Test 12 = 12 A P2 = 200 W Short Circuit Test V1 = 35 V P1 = 300 W I. Based on the short circuit test, determine the equivalent series...
what information needed?
3. Repeat Example 7.8, using a 100 kVA transformer and #3/0 AWG and #2 AWG cables for the SLs and SDs, respectively Show the procedure to arrive at the following answers (a) 0.72 pu A (b) 0.050 pu V Example 7.8 residential secondary distribution system. Assume that the distribution trans- Figure 7.11 shows former capacity is 75 kVA (use Table 7.1), all secondaries and services are single-phase three wire, nominally 120/240 V, and all SLs are of...
The three figures below show a balanced three phase Delta, its Wye equivalent and the single phase equivalent of the three phase Wye. All three representations have a complex load ZALD or ZYLD and a complex line impedance ZLINE Refer to these diagrams when answering questions 1-4. ZLINE Vab= 679 L 30° ZLINE ZALD ZLINE = 2+1 DELTA ZALD= 18+24j2 LINE ZLINE ZLINE ZYLD 7yun WYE WYE ZYLD ZLINE ZLINE Van Complex Load ZYLD Single Line WYE 1) In the...
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