A single-phase transformer of 100 KVA, 60 Hz, 12000/240 V, the respective tests are carried out: -Open Circuit (high side open) Voltage (v): 240 Current (A): 8.75 Power (W): 980 -Short Circuit (Low side shorted) Voltage (v): 600 Current (A): 8.3 Power (W): 1200 a) Draw the equivalent circuit of the transformer referred to the high voltage side with the respective values of its elements b) Voltage regulation for a power factor of 0.8(-) c) The efficiency when it is working at 75% of its full load and power factor of 0.8(-).

Q: single phase transformer is rated at 15KVA, 220/99 , If a load resistance 1.6 ohm is connected…

A: By ohms law current in resistor=voltage across resistorresistance. Primary winding current…

Q: Question 2 A single phase 50 Hz core type transformer has rectangular cores 30 × 20 cm. and the…

A: The objective of the question is to find the number of turns per limb on the high and low voltage…

Q: Answer by true or false * True False while conducting short- circuit on transformer the low voltage…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: 2 A 1000 kVA 11 kV/400 V ONAF cooled transformer works on a cycle of 3 hours heavy load and 21 hours…

A: Given that the peak load is 140% and can only be maintained for 0.5 hours per hour of time constant,…

Q: 2- A 100 kVA,3-phase, 50 Hz, 6,600/400 V transformer is A-connected on HV side andY-connected on LV…

A: Transformer is a static electrical device which transfers power from one circuit to another circuit…

Q: A single phase transformer has a full load total loss of 900 W and an iron loss of 500 W. The copper…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: A transformer has a turn ratio of 1: 10. A resistance of 2000 ohms is connected across the secondary…

A:

Q: During open circuit test of a transformer a) Primary is supplied rated voltage b) Primary is…

A: This is a problem of open circuit and short circuit test of transformer. The detailed explanation is…

Q: transformer is called single winding transformer. O Three phase O Auto O 1:1 O Isolation

A: Correct option is auto transformer that is 2nd option is correct

Q: 2300V to 230V step down transforme ave the following resistances and induc Re' =0.093 ohm Re" =…

A:

Q: A load impedance of 52 ohms is connected to the secondary winding of the transformer with 208 volts.…

A: Using ohms law I=V/R Given voltage is 208 volts And impedance of 52 ohms

Q: What is the purpose of lighting arrester in the transformer

A: A lightning arrester, also known as a surge arrester or lightning rod, is a protective device used…

Q: Explain the Different connections of Three Phase Transformer including the working principle

A: Electrical machines can be either generator, motors or transformers. They can be either Ac machines…

Q: What would happen if primary and secondary of transformer are connected to sources of different…

A: Transformer is used to transfer electrical energy from primary winding to secondary winding.…

Q: What is the percentage voltage error of a potential transformer with system voltage of 11,000 V and…

A: System voltage = 11,000 V, Turn ratio = 100, Secondary side voltage=105 V, To find- The % voltage…

Q: What is the benefit of the electrical transformer in the case of load and in the case no load?

A: Discuss the benefit of the electrical transformer in the case of load and in the case no load?NoteA…

Q: A core type transformer operates on 405/ 235 volt, 50 Hz supply. If the cross-sectional area of the…

A:

Q: A single-phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu…

A:

Q: Under what circumstances the power transformer will act as a source of harmonic? Rated load contion…

A: Correct option is saturation condition we know that motors and transformers become source of…

Q: What are the different losses across the transformer? Which losses are variable? What turns ratio…

A:

Q: Draw the equivalent circuit of a 10 KVA, 1860 / 400 V 1-phase transformer with R1=0.4 ohms, R2=0.03…

A: primary referred resistance=R1+R2' R2' is the secondary resistance referred to primary. Similarly…

Q: Refer to Figure I on Worksheet I, to answer numbers 18 through 27 based on the fact that it is a…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Look at the following figure and answer the following questions based on the fact the transformer is…

A: Given: The transformer is 240/480V to 120/240V 4kVA single phase:

Q: What type of transformer did you build where the secondary voltage is lower than the rimary voltage?…

A:

Q: The hysteresis loop of the core material of a transformer should have (a) a large area (b) a small…

A: When a transformer is in use, its core is taken up by many complete magnetization cycles. During…

Q: The short circuit test of a transformer gives information of

A: In this question , we will write about short circuit test of a transformer....

Q: In a 1-phase transformer, if the no load secondary terminal voltage is 222 V and the full load…

A: Given that Vnl=222VVfl=209V

Q: How is the EMF of a three phase transformer

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: 2. What will happen when the secondary of a current transformer is disconnected from its load while…

A: A transformer is an electrical machine which is used in AC circuit to either step up or step down…

Q: A core type transformer operates on 405/ 220 volt, 50 Hz supply. If the cross-sectional area of the…

A:

Q: The voltages of a 40 kVA single phase transformer are 15kV / 0.4 kV. No-load losses are 200 watts.…

A: TRANSFORMER: The transformer transfers power from one circuit to another circuit without a change…

Q: A single phase transformer is rat 2,424 V / 206 V. 60 Hz The eau

A:

Q: y? didy 2 2Y

A: The above Integration can be solved by using substitution method. The solution is given below.

Q: Due to opening , Which winding of current transformer will damage Answer:

A: Answer is secondary winding of ct will damage If secondary of CT Gets opened , secondary current I2…

Q: A core type transformer operates on 400 / 225 volt, 55 Hz supply. If the cross-sectional area of the…

A:

Q: If a transformer is to be taken out for maintenance, as an engineer, outline the switching sequence…

A: Switching sequence – To turn on or off a bus bar, equipment, power plant requires expertise and…

Q: With the aid of simple sketches explain briefly the meaning of transformer polarity and terminal…

A: Given: Explain briefly the meaning of transformer polarity and terminal marking.

Q: Given this transformer with load, what is the expected phase of the primary and secondary voltage?…

A: The solution is provided in the following section.

Q: A transformer has a turn ratio of 1: 10. A resistance of 2000 ohms is connected across the secondary…

A: Given, Transformer turns ratio, a=110=0.1. Secondary terminal resistance, R2=2000 Ω.

Q: In transformer , which is always working with its secondary short circuited.

A: In this question , we have to find out transformer in which secondary short circuited...

Q: If I build a transformer and I have the following data: Primary voltage = 127V Number of turns in…

A:

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.