Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Chapter 14, Problem 37P
To determine
To discuss: The effect on the transformer if the primary winding is short circuited.
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A three-winding transformer is connected to an AC voltage source as shown in the figure. The
number of turns is as follows: N₁ = 100, N₂ = 50, N3 = 50. If the magnetizing current is neglected,
and the currents in two windings on secondary side are 2230° and 22150°, then what is the value
of the primary current in Ampere?
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N₁
№ ₂
Z
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N3
H
I₁₂
I₁₂₁
¹3
How do you calculate N1/N2? Ratio of primary to secondary turns of a transformer?
Draw the
general diagram
of a single-phase
transformer and briefly
show how it works.
Chapter 14 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 14 - An ideal transformer delivers the same power to...Ch. 14 - Dots on the schematic symbol of a transformer show...Ch. 14 - A step-down transformer has more turns in the...Ch. 14 - The primary current in a transformer is always...Ch. 14 - Prob. 5TFQCh. 14 - Impedance-matching transformers allow maximum...Ch. 14 - Prob. 7TFQCh. 14 - A balun is a form of impedance-matching...Ch. 14 - Power transformers are typically rated in VA...Ch. 14 - Transformer efficiency is the ratio of output...
Ch. 14 - A transformer is used for dc voltages ac voltages...Ch. 14 - Which one of the following is affected by the...Ch. 14 - Prob. 3STCh. 14 - Prob. 4STCh. 14 - Prob. 5STCh. 14 - Prob. 6STCh. 14 - Prob. 7STCh. 14 - Prob. 8STCh. 14 - Prob. 9STCh. 14 - Prob. 10STCh. 14 - Prob. 11STCh. 14 - Prob. 12STCh. 14 - Prob. 13STCh. 14 - Prob. 14STCh. 14 - Prob. 1PCh. 14 - Prob. 2PCh. 14 - What is the turns ratio of a transformer having...Ch. 14 - Prob. 4PCh. 14 - Prob. 5PCh. 14 - If 120 V ac are connected to the primary of a...Ch. 14 - Prob. 7PCh. 14 - Prob. 8PCh. 14 - For each transformer in Figure 14-46, draw the...Ch. 14 - Prob. 10PCh. 14 - Prob. 11PCh. 14 - How many primary volts must be applied to a...Ch. 14 - Prob. 13PCh. 14 - Prob. 14PCh. 14 - Prob. 15PCh. 14 - If RL is doubled in the circuit of Figure...Ch. 14 - Prob. 17PCh. 14 - Determine the following quantities in Figure...Ch. 14 - Prob. 19PCh. 14 - Prob. 20PCh. 14 - Prob. 21PCh. 14 - Prob. 22PCh. 14 - For the circuit 14-54, find the turns ratio...Ch. 14 - Prob. 24PCh. 14 - Prob. 25PCh. 14 - Prob. 27PCh. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 31PCh. 14 - Prob. 32PCh. 14 - Prob. 33PCh. 14 - Prob. 34PCh. 14 - Prob. 35PCh. 14 - Prob. 36PCh. 14 - Prob. 37PCh. 14 - Prob. 38PCh. 14 - For the loaded, tapped-secondary transformer in...Ch. 14 - Prob. 40PCh. 14 - Determine the voltage measured by each voltmeter...Ch. 14 - Prob. 42PCh. 14 - Prob. 43PCh. 14 - Prob. 44PCh. 14 - Prob. 45PCh. 14 - Prob. 46PCh. 14 - Prob. 47PCh. 14 - Prob. 49P
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- What is the purpose of a transformer? Draw the symbols for a transformer.arrow_forwardDue to the increase in load, what change you saw in the transformer’s output power and voltage regulation?arrow_forwardUse the laws of electromagnetic induction to explain how a step-down transformer works; make sure to explain how the voltage in the secondary comes about.arrow_forward
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- Q/What is the benefit of the electrical transformer in the event of a load and in the absence of a load?arrow_forwardA single phase 200/200 V ,55HZ transformer has an efficiency of 98% at full- load. Determine the percentage voltage regulation and output frequency, if the terminal voltage on Full-load is 175 V. % Voltage regulation Output Frequencyarrow_forwardDiscuss the relationship between the operating frequency and the transformer size? Through your engineering studiesarrow_forward
- A single phase 60 Hz transformer has its core volume of 1.5x10-3 cu m. The maximum flux density is 1.0 tesla and the hysteresis constant of the core is 6000. find the hysteresis loss.arrow_forwardThe main difference between transformer and dc motor is The transformer has a core The transformer has two windings The transformer is a static device The transformer has a magnetic circuitarrow_forwardA Single-phase transformer has a turns ratio 1: 2, and is connected to a purely resistive load as shown in the figure. The magnetizing current drawn is 1 A, and the secondary current is 1 A. If core losses and leakage reactances are neglected, the primary current is 1:2 llllllll Aarrow_forward
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