A tap-changing transformer has an effective impedance of 0.01+j 0.1 Ω and serves a load which draws an apparent power of 0.9 MVA with 0.8 lagging power factor. If the voltage at load terminals is 1 kV, find the voltage at the source side: (a) With 110% tap located at the load side. (b) With 90% tap located at the source side. (c) With 90% tap located at the load side. ..

Q: If the full load copper loss of transformer is 378 W, then the copper loss at half load is given by…

A: We copper losses are proportional to square of current , at half loaf current will be half .

Q: Electrical Apparatus Two transformers A and B are connected in parallel. The respective impedances…

A: In this question we will find load shared by transformer in parallel connection....

Q: A transformer has a rated output of 400 kVA at a power factor of 0.6. Determine the rated power…

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Q: A transformer has a rated output of 400 kVA at a power factor of 0.6. Determine the rated power…

A: As per the question, it is given that Rated output (S) = 300 kVA Power factor (ϕ) = 0.6 We have to…

Q: A 50 KVA, 4,400/220 V transformer has r, =3.54 ohms, r,=0.009 ohms, X, =5.2 ohms and x, =0.15 ohm.…

A:

Q: A three phase , 100 kVA ,50 Hz , 11000/380 V , delta-star transformer has a no-load of 500W. The…

A: According to the question we have to find (5.1) the equivalent resistance and reactance referred to…

Q: In load test on single phase transformer, the secondary voltage increases with decrease in load.…

A: Ans. True

Q: Inductive susceptance is measured in: A. Ohms. B. Henrys. C. Farads. D. Siemens.

A:

Q: transformer has a rated output of 200 kVA at a power factor of 0.6. Determine the rated power output…

A:

Q: In the transformer circuit below, a load of 2.5cis20° Ohms is connected to the output terminals of…

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Q: efficiency

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Q: Two transformers with equal turns have impedances of, Unit A (0.5 +j3) ohms and Unit B (0.6 +j10…

A: This question belongs to electrical machine . It is based on the concept of load sharing by…

Q: A transformer has a rated output of 200 kVA at a power factor of 0.8. Determine the rated power…

A: It is given that: Rated output=VI=200 KVA=200×103 VAPower factor=cosϕ=0.8

Q: The step up transformer has transformation ratio less than 1 Select one: O True False

A: The transformation ratio is defined as the ratio of secondary voltage to primary voltage. It is…

Q: In case of a Balanced load, the impedance values in all three phases should be same in magnitude and…

A:

Q: A transformer has a rated output of 200 kVA at a power factor of 0.8. Determine the rated power…

A: Given: Rated power, VI = 200kVA Power Factor = 0.8 The power output and reactive power can be…

Q: A 2400/2200 volt auto transformer delivers a load of 90.5 Kw at a pf of 0.75. Solve for the current…

A: Given:Transformer: 2400/2200Load=90.5KWPower factor= 0.75

Q: In a delta connected transformer I L = I P.   True or false

A: In delta connection IL = √3 IP

Q: Please answer fast A transformer has a rated output of 400 kVA at a power factor of 0.6. Determine…

A:

Q: Q/A single-phase transformer with a capacity of 100 kVA and a voltage of 2000/400 and the equivalent…

A:

Q: A 5KVA, 240/120 V single phase transformer has the following parameters R1 = 0.06 Q R2 = 0.015 Q X1…

A: 5kVA, 240/120V Single phase transformer has given parameters.  Find the primary current, voltage…

Q: <0° 39 VI 1Ω j2 Ω tele -j1 Ω tr j2 Ω j2 Ω j2 Ω 1Ω tele j1 Ω -j2 Ω

A: Zin  impedance seen from the source in the transformer circuit . Circuit:-

Q: A transformer has a rated output of 300 kVA at a power factor of 0.6. Find the rated power output…

A:

Q: For a 250 [kVA] practical transformer with 4160 [V) primary and 480 [V] secondary, the base…

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Q: The open-circuit voltage of 242 V and the full load secondary voltage of 222 V, then the %…

A: As per guidelines I have to answer first question only.please post remaining again Given data Voc or…

Q: 3/A single phase transformer has 250 primary turns connected to a 500 V. The output voltage is 150…

A: Given, Single phase transformer has, Primary turns, N1 = 250 turns Primary Voltage, V1 = 500 V…

Q: A multitap transformer has 1500 turns on the primary, 100 turns between B and C, 600 turns between A…

A:

Q: A transformer has 520 primary turns and 160 secondary turns. The primary and secondary resistances…

A: First we will refer secondary side resistance and reactance to primary side and than we will find…

Q: 8 The EMF induced in the secondary winding of a 50 Hz single-phase transformer having 500 turns on…

A: Given: The EMF induced in the secondary winding, E2=13.2 kV Frequency, f = 50 Hz Number of turns on…

Q: A 212 V/ 116 V single-phase transformer has a core loss of 124 W and the no-load current is 0.7 A.…

A:

Q: Delta-Star connection of transformer is best suitable for_ loads. O Power о Сараcitive O Both…

A: Choose the correct option Delta star connection of transformer is best suitable for...... Loads.…

Q: AMohetone on ng uestion A transformer has 197 turms on the primary coll and 530 tums on the…

A: We need to find out current on secondary side of transformer .

Q: Please answer fast A transformer has a rated output of 400 kVA at a power factor of 0.6. Determine…

A:

Q: A transformer has a rated output of 200 KVA at a power factor of 0.8. Determine the rated power…

A: Given: Rated output V.I=200 kVA and p.f.=cosϕ=0.8

Q: In load test on single phase transformer, the secondary voltage decreases with increase in load.…

A: In the load test of the single phase transformer.  This is based on the true false.  Secondary…

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.