Three single phase ideal transformers, each of rating 5kVA, 200V/400V, 50 Hz are available. The LV sides are connected in delta and HV sides are connected in delta. What line to line 3- phase voltage should be applied and what will be the corresponding HV side line to line voltage will be? Also calculate and show the line and phase current magnitudes in both LV & HV sides corresponding to rated condition. Draw the schematic diagram and label the answer.

Q: There are two types of transformers; Step - Up & Step designed in a unique manner to either increase…

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Q: What is current transformer? 2 difference between current and potential transformers.

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Q: In two winding transformers, windings are electrically isolated and magnetically connected. Select…

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Q: A 3-phase 100OKVA, 11000/416 transformer is delta-connected on the primary and star connected on the…

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Q: Discuss the circumstances where parallel operation of transformers may be a) considered beneficial.

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Q: TRUE or FALSE: Distribution transformers are always step-down transformers.

A:

Q: 7. What is the no-load voltage when the full-load secondary voltage is 108 V and transformer…

A: Given: In a transformer, Full load secondary voltage V2fl=108 V. Transformer regulation VR=10%.

Q: Explain the efficiency of increasing the electrical power system of connecting transformers in…

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Q: The various types of errors in dynamometer wattmeters are A./Error due to Eddy currents B./Error…

A: The solution is given

Q: If you have 3-phase power and you need to step down (or up) in 3-phase voltage, how many…

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Q: Three single phase transformers are connected in a Delta-Wye configuration.  Each transformer is…

A:

Q: Name two types of Transformers equivalent circuit and then compare them.

A:

Q: Three-phase, 50 Hz 34500/10500 T/S ​​connected transformer single-phase visible on the side of the…

A: There is confusion in the transformer connection T/S it would be D/S that is delta-star. Hence,…

Q: A single phase transformers working at UPF has an efficiency of 90% at both half load and at the…

A:

Q: The efficiency of two identical transformers under load conditions can be determine by what test?

A:

Q: What's The relation between turn ratio current ratio annd voltage ratio(if it exists) for single…

A: The transformer is a static device that steps up or steps down the voltage depending upon the turn…

Q: Connect three single-phase transformers in Y-Y, with subtractive polarity, so that the line-to-line…

A: Given: Connect three single-phase transformers in Y-Y, with subtractive polarity, so that the…

Q: A15 The rating of transformer is stated in terms of

A: In this question , we will writr rating of transformer..

Q: transformer, the secondary side operates almost in open circuited condition.

A:

Q: TRUE or FALSE: Any two transformers connected in parallel will always share the load equally.

A: TRUE or FALSE question: Any two transformers connected in parallel will always share the load…

Q: A 40 KVA, 1000 V/ 400 V, 50 Hz, single phase transformer has HV and LV side winding resistance as…

A: Given- 40 KVA, 1000 V/400 V, 50 Hz, single phase transformer, HV side winding resistance = 0.7 ohm,…

Q: The Scott-T transformers are used to provide a variable voltage output. Select one: True False

A: The scott T transformation are used to provide a variable voltage output?    This statement is true…

Q: 2. What will happen if transformers are connected in parallel without satisfying the necessary…

A: Transformer parallel connection

Q: A 50 Hz, Scott connected transformer supplies an unbalanced two phase load at ( 400 V) per phase.…

A: Scott connection is used to convert a balanced three-phase into balance 2 phases or vice versa. It…

Q: In medium transformers, the total iron losses may vary from. rated output. % of the 0.4 to 1 O 0.2…

A: The iron loss of the transformer is defined as the sum of the hysteresis current loss, eddy current…

Q: A circuit consists of an AC voltage source, a 10-ohm resistor, and a capacitor, all connected in…

A: A circuit consists of an AC voltage source, a 10-ohm resistor, and a capacitor, all connected in…

Q: Grounding methods in Power systems

A:

Q: Q5/B: Explain delta-star connection of 3 ph transformers. What its advantages and disadvantages?

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Q: If the core loss of single phase transformer at full load is 98 W, then the core loss at 25% of load…

A: In the transformer core losses independent of load.   We can also say in the transformer core losses…

Q: A three-phase two winding transformer is rated 1200MVA, 24/345kV 50Hz. It has a leakage reactance of…

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Q: 3. Single-phase T1-transformer with a power of 500 kVA and a single-phase T2- with a power of 400…

A: Power factor: This tells how much active power is utilized by the circuit from the apparent power.

Q: Draw and explain the phasor diagram for two transformers in parallel.

A: Transformer connection in parallel :  The parallel Operation of a Single Phase Transformer means…

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: explain why Transformers are necessary in all stages of power distribution systems. Three-phase…

A: Given: Transformer: Transformer is a static device used for the transfer of varying voltage and…

Q: The statement is True or False? In two winding transformers, windings are electrically connected and…

A: Given In two winding transformer windings are electrically connected and magnetically isolated.

Q: Q5/C: Compare between Auto transformers and 2 winding transformers.

A: The transformer is a static electrical device in which is used to step up/down the current and…

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.