Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Textbook Question
Chapter 14, Problem 8TFQ
A balun is a form of impedance-matching transformer.
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In a step-up transformer, the turn ratio is 1: 20. The resistance of 100
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A
IcA
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Inc
VAN/N1
Van/N2
Van/N1
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In a step-down transformer ratio, which is larger
the number of ratio
O the number of turns
O Secondary Voltage
O Primary Voltage
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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- For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is referred to winding 1 (primary) by multiplying Z2 by (a) The turns ratio (N1/N2) (b) The square of the turns ratio (N1/N2)2 (c) The cubed turns ratio (N1/N2)3arrow_forwardAll values of a transformer are proportional to its __________________ ___________________.arrow_forwardWhat is the purpose of the transformer in Figure 6.25?arrow_forward
- How do i calculate secondary current in transformer analysisarrow_forwardWhich of the following quantities is increase in a step-down transformer? Current Voltage O Power O Frequencyarrow_forwardThe core losses in the transformer are also called O Variable losses O Winding losses O Constant losses O Copper losses a transformerarrow_forward
- A 400/800 ratio transformer has secondary winding resistance of 0.5 ohm. What is the total resistance in ohmsreferred to primary?arrow_forwardWhich of the following are power losses that can occur in a practical transformer (non-ideal)? copper loss O loss due to eddy currents V hysteresis loss O voltage drop due to coil materialarrow_forwardThe table below shows some performance parameters of a certain power transformer. Full-load voltage regulation Full-load copper loss Load power factor 5% 0.5 Lagging Zero voltage regulation is obtained at a load power factor of: 0.9176 leading 08 leading 0.397 lagging 2% 0.703 leadingarrow_forward
- In your own understanding what do you understand by step down transformerarrow_forwardA Transformer has turns ratio of 2:15. When the secondary turns is 300, what is the primary turns? 40 400 2250arrow_forwardA 2/0.4 kV, single-phase transformer takes a no-load current of 1 A and the core losses is 500 W. Find the magnetizing component current 0.35 A 0.15 A O 0.25 A 0.45 Aarrow_forward
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