1. If 480 volts is applied to the primary winding of a transformer which has 300...
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1.
If 480 volts is applied to the primary winding of a transformer
which has 300...
An ideal transformer has a primary winding with 100 turns and a secondary winding with 20...
An ideal transformer has a primary winding with 100 turns and a secondary winding with 20 turns. If the primary winding has a voltage drop of 10 V AC, what is the EMF in the secondary coil? A. 100 V AC B. 10 V AC C. 2 V AC D. 20 V AC
help me please please answer many as possible 10. The hysteresis loss in the core of a transformer can be reduced by A. increasing the frequency of the aliemating current, B. using a solid iro...
help me please
please answer many as possible
10. The hysteresis loss in the core of a transformer can be reduced by A. increasing the frequency of the aliemating current, B. using a solid iron core. C. using grain-oriented-steel D, reducing the connected load. 11. In Fig. 1(b) in the text, the phasor I, It is the resultant of the A. exciting and the magnetizing current. B. active and the reactive secondary current. C. primary and the exciting current. D....
1) In a transformer core, consider there are two cases: Case 1: primary winding and the...
1) In a transformer core, consider there are two cases: Case 1: primary winding and the secondary winding is separated by a large distance Case 2: primary winding and the secondary is separated by a very small distance In which of the above two cases the leakage flux will be lower? and why? (Justify with reason) 2M 2) Do ideal transformers behave as practical transformers in the real world? Explain your answer by justification? 2M
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The...
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns....
An ideal transformer with 300 turns in its primary and 500 turns in its secondary has...
An ideal transformer with 300 turns in its primary and 500 turns in its secondary has a peak primary voltage of 12 volts. Its peak secondary voltage is a. 10 b. 20 c. 30 A transformer's primary and secondary coils are connected so that the current can flow directly from one to the other. a. true b. false
The primary coil of an electric train transformer has 400 turns and the secondary has 50....
The primary coil of an electric train transformer has 400 turns and the secondary has 50. If the input voltage VP= 120V what is the output voltage? What of the following statements is/are correct? Transformers work only with DC sources; Transformers work only with AC sources; The effect utilized in transformer is based on the Faraday’s law; The effect utilized in transformer is based on the Ohm’s law; A and D; B and C.
The primary coil of an electric train transformer has 400 turns and the secondary has 50....
The primary coil of an electric train transformer has 400 turns and the secondary has 50. If the input voltage VP= 120V what is the output voltage? What of the following statements is/are correct? Transformers work only with DC sources; Transformers work only with AC sources; The effect utilized in transformer is based on the Faraday’s law; The effect utilized in transformer is based on the Ohm’s law; A and D; B and C.
Part A: A transformer with turns ratio (primary/secondary) of 18:1 is used to step down the...
Part A: A transformer with turns ratio (primary/secondary) of 18:1 is used to step down the voltage from a 120 V wall socket to be used in a battery charger. What is the voltage supplied to the recharger? Part B: The electric motor in a toy train requires a voltage of 9.0 V. Find the ratio of turns on the primary coil to the turns on the secondary coil in a transformer that will step the 120-V household voltage down...
HELP PLEASE! The primary coil of an electric train transformer has 400 turns and the secondary...
HELP PLEASE! The primary coil of an electric train transformer has 400 turns and the secondary has 50. If the input voltage VP= 120V what is the output voltage? What of the following statements is/are correct? Transformers work only with DC sources; Transformers work only with AC sources; The effect utilized in transformer is based on the Faraday’s law; The effect utilized in transformer is based on the Ohm’s law; A and D; B and C.
1. A step down transformer with a turns ratio of 6 to 1 has 120V applied...
1. A step down transformer with a turns ratio of 6 to 1 has 120V applied to its primary coil. A 25Ω load resistor is connected to the secondary coil. Calculate the following (3+2+2 -7 Points) Secondary coil voltage Secondary coil current Primary coil current a. b. c. 2. A step up transformer has a primary coil current of 1SA and an applied voltage of 220V. The secondary coil current is 5A. Calculate the following (3+3+2+2-10 Points) Secondary coil voltage...
help me please
please answer many as possible
10. The hysteresis loss in the core of a transformer can be reduced by A. increasing the frequency of the aliemating current, B. using a solid iron core. C. using grain-oriented-steel D, reducing the connected load. 11. In Fig. 1(b) in the text, the phasor I, It is the resultant of the A. exciting and the magnetizing current. B. active and the reactive secondary current. C. primary and the exciting current. D....
1) In a transformer core, consider there are two cases: Case 1: primary winding and the secondary winding is separated by a large distance Case 2: primary winding and the secondary is separated by a very small distance In which of the above two cases the leakage flux will be lower? and why? (Justify with reason) 2M 2) Do ideal transformers behave as practical transformers in the real world? Explain your answer by justification? 2M
Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns....
1. A step down transformer with a turns ratio of 6 to 1 has 120V applied to its primary coil. A 25Ω load resistor is connected to the secondary coil. Calculate the following (3+2+2 -7 Points) Secondary coil voltage Secondary coil current Primary coil current a. b. c. 2. A step up transformer has a primary coil current of 1SA and an applied voltage of 220V. The secondary coil current is 5A. Calculate the following (3+3+2+2-10 Points) Secondary coil voltage...
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