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 1ST
A transformer is used for
- dc voltages
- ac voltages
- both dc and ac
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The path of a magnetic flux in a transformer
should have
O High resistance
O Low reluctance
O Low resistance
O High reluctance
In transformer, the eddy current loss can be
minimized by
O using thin size copper conductors
O using magnetic material with low permeability
laminating the core
O using magnetic material with high
permeability
In transformer, the power will
with increase in voltage.
remain same
decreases
be doubled
increases
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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- All values of a transformer are proportional to its __________________ ___________________.arrow_forwardThe iron core in a transformer has the purpose of decreasing the reluctance of the magnetic path reducing hysteresis loss providing support to windings reducing eddy current lossarrow_forwardIn transformer, open circuit test is used to determinearrow_forward
- Name the losses in the transformerarrow_forwardThe principle operation of LVDT is based on the variation of Select one a. Self inductance b. Reluctance c. Mutual inductance d. Permanencearrow_forwardIn transformer, the eddy current loss will with increase in load. remains same increases decreases be zeroarrow_forward
- Describe the four tests carried out on the transformer and state their purposearrow_forwarda) The transformer has a turns ratio of 9.45, what is the dc load voltage considering the ripple voltage? b) The transformer has a turns ratio of 9.45, what is the dc load voltage without considering the ripple voltage?in 2 decimal places.arrow_forwardQ5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across R, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diodeshave? (Use constant voltage drop model for the Silicon diode) D IN4001 OV 10 kN IN4001 DELLarrow_forward
- 8- The equivalent resistance of the primary of a transformer having K = 4 and RI - 0.1 ohm when referred to secondary becomes..ohm. a-0.1 b-0.01 c-0.004 d- 1.6arrow_forwardIn transformer, the power will with decrease in voltage. increases decreases O remain same O be doubledarrow_forwardWhat is the benefit of the electrical transformer in the case of load and in the case no load?arrow_forward
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