Laboratory Manual for Introductory Circuit Analysis
13th Edition
ISBN: 9780133923780
Author: Robert L. Boylestad, Gabriel Kousourou
Publisher: PEARSON
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Chapter 23, Problem 24P
Determine the primary and secondary voltages and currents for the autotransformer in Fig. 23.67.
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A 50 kVA transformer has an efficiency of 98% at full load,0.8 p.f. and 97% at half full-load, 0.8 p.f. Determine the full-load copper loss and iron loss. Find the load at which maximum efficiency occurs and also maximum efficiency.
Q6. Specification/Range of Power Supply:
Q7. What are the types of Loads are available in the Lab?
Q8. Write the types of Transformer and the Specification?
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With base MVA of 150 and base
voltage of 33. If the reactance of the
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Chapter 23 Solutions
Laboratory Manual for Introductory Circuit Analysis
Ch. 23 - For the air-core transformer in Fig. 23.57: Find...Ch. 23 - Repeat Problem 1 if k is changed to 1. Repeat...Ch. 23 - RepeatProblem1fork=0.3,NP=300turns,andNS=25turns.Ch. 23 - For the iron-core transformer (k = 1) in Fig....Ch. 23 - RepeatProblem4forNP=240andNS=30.Ch. 23 - Find the applied voltage of an iron-core...Ch. 23 - If the maximum flux passing through the core of...Ch. 23 - For the iron-core transformer in Fig. 23.59: Find...Ch. 23 - Find the input impedance for the iron-core...Ch. 23 - Find the voltage Vg, and the current Ip if the...
Ch. 23 - If VL=240V,ZL=20resistor,Ip=0.05AandNs=50 find the...Ch. 23 - If Np400,Ns=1200andVg=100V,findthemagnitudeofIp...Ch. 23 - For the circuit in Fig. 23.60, find the...Ch. 23 - For the transformer in Fig. 23.61, determine the...Ch. 23 - For the transformer in Fig. 23.61, if the...Ch. 23 - Prob. 16PCh. 23 - Discuss in your own words the frequency...Ch. 23 - Determine the total inductance of the series coils...Ch. 23 - Determine the total inductance of the series coils...Ch. 23 - Determine the total inductance of the series coils...Ch. 23 - Write the mesh equations for the network in Fig....Ch. 23 - Determine the input impedance to the air-core...Ch. 23 - An ideal transformer is rated...Ch. 23 - Determine the primary and secondary voltages and...Ch. 23 - For the center-tapped transformer in Fig. 23.42,...Ch. 23 - For the multiple-load transformer in Fig. 23.43,...Ch. 23 - Prob. 27PCh. 23 - Write the mesh equations for the network of Fig....Ch. 23 - Write the mesh equations for the network of Fig....Ch. 23 - A current transformer has a secondary with 250...Ch. 23 - Generate the schematic for the network in Fig....Ch. 23 - Prob. 32PCh. 23 - Using a transformer from the library find the load...
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- A 10kva single transformer has turns ratio of 300 / 23. The primary is connected a 1500V, 60Hz supply. Find the secondary voltage on open circuit and the approximate values of the currents in the two windings on full load. Find also the maximum values of the flux.arrow_forward1.) A transformer with a rating 600 KVA has an efficiency 0f 94 percentage at full load and at 1/4TH of full load, with a power factor of 1. Solve and determine the efficiency of the mentioned transformer at 70 percentage of full load and with a power factor of 0.80 lagging.arrow_forwardA transformer is having copper loss of 144 W and core loss of 64 W when it is carrying 20% overload current. Find the load at which transformer will operate at maximum efficiency.arrow_forward
- Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.arrow_forwardSolve it quickly. Â A single phase transformer of 50kVA has maximum efficiency of 80(%) at full load 0.9 lagging power factor.Find value of iron and copper loss at maximum efficiency.arrow_forwardA 600KVA transformer has a primary winding resistance of 0.452 and secondary winding resistance 0.00292. The iron loss is 2.5kW and the primary and secondary voltages are 5kV and 320V respectively. If the power factor of the load is 0.90, determine the efficiency of the transformer for the following conditions: i. Full load ii. 80% of full loadarrow_forward
- A 15kVA, 2400/240, 60 Hz transformer has a primary winding resistance of 4 ohms and a secondary winding resistance of 0.04 ohms. The core losses are 60 W.Find: a) The copper losses at full load and b) The efficiency of the transformer when fully loaded with a PF of 0.9arrow_forwardQ23. If DC voltage of 240 V is connected to the primary of a transformer having 1:10 turns ratio, then the voltage across the secondary winding will be.arrow_forwardApproximate solution time is 5 minutes. A transformer supplies power to a feeder that has five customers. Daily maximum demands for these customers are 120 kW, 40 kW, 90 kW, 110 kW, and 180kW. The maximum demand on the feeder is 243kW. The coincident factor of the feeder isarrow_forward
- The accelerating anode in CRO is also called as negative electrode. Select one: True False If the core loss of single phase transformer at full load is 262 W, then the core loss at 50% of load is O 66W O 16W O 262W 131Warrow_forwardA 100kVA transformer has a maximum efficiency of 0.95 at 50% full load and unity power factor . During a day , it is loaded as follows : 100kVA at unity p.f for 8hours , 50kVA at 0.8p.f. for 6hours, and no load for 10hours. Determine its all day efficiency .arrow_forwardQ1. what are the advantages of transferring parameters from 1 side of transformer to other side? Â properarrow_forward
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