Homework Answers
Voltage Regulation describes how the input voltage of transformer changes with Various load.
This Statement is True.
Voltage regulation of a transformer can be defined as the change in the magnitude of the secondary voltage of a transformer when the load changes from full load to no-load, assuming a constant primary voltage.
VR = (No load voltage - Full Load voltage)/(No load voltage)
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Question 4 (1 point) Voltage Regulation (VR) describes how the input voltage of a transformer changes...
Task A1 1) How to calculate the emiciency of a single-phase transformer? 2) What is voltage...
Task A1 1) How to calculate the emiciency of a single-phase transformer? 2) What is voltage regulation (VR) of a transformer and how to calculate it? 3) Transformer 1 has VR-6.5% and Transformer 2 has R=4.2%. What transformer is better in design?
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage...
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage ratio of 10. The following parameters are referred to low voltage side, with a supply of 200V. Equvalent Impedance referred to low woltage side Zev 0.1+jo.s a Load impedance referred to low voltage side R-4000 X-2310 Magnetizing Branch referred to low voltage side Draw an approximate equivalent circut with the given parameters and determine the following: 81 The magnetizing current (), the core loss...
In a full wave bridge rectifier, input voltage is 110sin(2pi60t) V, Vd=0.7V. The transformer turn ratio...
In a full wave bridge rectifier, input voltage is 110sin(2pi60t) V, Vd=0.7V. The transformer turn ratio is 10:1. What is the amplitude of output voltage? What is the maximum voltage across diode which is off? For load of 5kohm, calculate C for Vr of 1V.
show all work 1. a transformer is connected to a 460 VAC line. The secondary voltage...
show all work 1. a transformer is connected to a 460 VAC line. The secondary voltage is 230VAC. The load connected to the secondary voltage draws 30A. a. what is the turns ratio of the transformer? b. How much current flows in the primary circuit? 2. You find that under unusually heavy loads, the voltage in your plant drops to 456 V. What will be the resulting secondary voltage if you use a transformer with a 4:1 primary to secondary...
A transformer is used to convert from one voltage to another. Which concept best describes how...
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ECET 212 ELECTRICAL POWER &MOTORS QUESTIONS 1. Transformer regulation can be determined with the formula a....
ECET 212 ELECTRICAL POWER &MOTORS QUESTIONS 1. Transformer regulation can be determined with the formula a. (EPRI-ESEc) / EPRI x100% b. (ENL- EFL)/ EFL x100% c. (IPRI-ESEC) / IPRI×100% d. (INL-IFL) / INL X 100% 2. What is the transformer regulation if the no-load and full-load voltages are 100 V and 95 v respectively? a. 105% b. 10.5% C. 95% d. 5.3% 3. The secondary voltage can rise above its rated value when the load is a. resistive b. capacitive...
Question 4 3 pts If the voltage across the resistance in the RLC circuit is VR...
Question 4 3 pts If the voltage across the resistance in the RLC circuit is VR (t) = i(t) · R, then the phase shift between the current and the voltage in the resistance R is ο π o 1/2 00 - 1/2
4-9 Question Completion Status: QUESTION 4 A three phase delta source is connected to a three...
4-9
Question Completion Status: QUESTION 4 A three phase delta source is connected to a three phase transformer. The primary of the transformer is connected in a delta configuration The line voltage on the primary is 240V. The turns ratio is 2:1. The secondary of the transformer is connected in a wye configuration. A wye connected load is attached to the secondary of the transformer. Each of the three load resistors has a resistance of 10 ohms. What is the...
Question 1 (1 point) Resistance of a wire depends upon voltage of the battery it is...
Question 1 (1 point) Resistance of a wire depends upon voltage of the battery it is connected to. True False Question 2 (1 point) Consider a light bulb with Resistor R is connected to voltage source V and the current is 1_1. If the voltage difference is doubled and resistance is kept same the new current is I_2. Can we say 11-2*1 2? True False
1) What component in a power supply converts ac line voltage to dc voltage? a. Transformer...
1) What component in a power supply converts ac line voltage to dc voltage? a. Transformer b. rectifier diode c. resistor d. capacitor 2) A circuit that provides an entirely positive or negative output voltage when an ac input voltage is applied is called a a. rectifier b. inverter c. filter capacitor d. zener diode 3) A control voltage or current is the a. power factor b. bias c. ground d. load 4) When the voltage at the op amp's...
Task A1 1) How to calculate the emiciency of a single-phase transformer? 2) What is voltage regulation (VR) of a transformer and how to calculate it? 3) Transformer 1 has VR-6.5% and Transformer 2 has R=4.2%. What transformer is better in design?
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage ratio of 10. The following parameters are referred to low voltage side, with a supply of 200V. Equvalent Impedance referred to low woltage side Zev 0.1+jo.s a Load impedance referred to low voltage side R-4000 X-2310 Magnetizing Branch referred to low voltage side Draw an approximate equivalent circut with the given parameters and determine the following: 81 The magnetizing current (), the core loss...
ECET 212 ELECTRICAL POWER &MOTORS QUESTIONS 1. Transformer regulation can be determined with the formula a. (EPRI-ESEc) / EPRI x100% b. (ENL- EFL)/ EFL x100% c. (IPRI-ESEC) / IPRI×100% d. (INL-IFL) / INL X 100% 2. What is the transformer regulation if the no-load and full-load voltages are 100 V and 95 v respectively? a. 105% b. 10.5% C. 95% d. 5.3% 3. The secondary voltage can rise above its rated value when the load is a. resistive b. capacitive...
Question 4 3 pts If the voltage across the resistance in the RLC circuit is VR (t) = i(t) · R, then the phase shift between the current and the voltage in the resistance R is ο π o 1/2 00 - 1/2
4-9
Question Completion Status: QUESTION 4 A three phase delta source is connected to a three phase transformer. The primary of the transformer is connected in a delta configuration The line voltage on the primary is 240V. The turns ratio is 2:1. The secondary of the transformer is connected in a wye configuration. A wye connected load is attached to the secondary of the transformer. Each of the three load resistors has a resistance of 10 ohms. What is the...
Question 1 (1 point) Resistance of a wire depends upon voltage of the battery it is connected to. True False Question 2 (1 point) Consider a light bulb with Resistor R is connected to voltage source V and the current is 1_1. If the voltage difference is doubled and resistance is kept same the new current is I_2. Can we say 11-2*1 2? True False
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