3 Single Phase, 100 kVA transformer are connected delat to supply an assorted load of 160 kW at 0.8 pf lagging. If one transformer is taken out for repair determine the… a) minimum kVAR of capacitor needed to prevent overloading of two transformer. (b) If the portion of the load os removed, find the pf of the load removed in 60 HP, 0.766 pf lagging, 90% efficiency.

Q: A 25 KVA single phase transformer has turns ratio of 100/29. If low voltage side is connected to 250…

A: Solution: Given data; KVA =25 KVA, single phase transformer ; turns ratio=N1N2…

Q: Two single phase transformers connected in open delta deliver power to motor and an equipment. Motor…

A:

Q: Ql-phase step down transformer 1250 KVA, 110002200 V, 50 Hz. The resistance iphase and leakage…

A:

Q: 23. The secondary windings of a 60 Hz transformer has 50 tums. If the induced voltage of this…

A:

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

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

Q: Consider a 7200V/240V transformer with center-tap on the secondary that is a grounded neutral. If a…

A: Given: Center-tap transformer with neutral grounded with rating 7200V/240V P1=1.0 kWP2=0.5 kW

Q: A normal transformer has a nominal 60 kVA. The nominal primary and secondary voltages are 600 V and…

A: Given data : Transformer rating P=60 kVA Primary voltage V1=600 V Secondary voltage V2=120 V

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: Two single-phase transformers with equal ratings and turns ratlo are operated in parallel to supply…

A:

Q: Explain the faults in transformer. Explain the construction and working principle of Buchhloz Relay

A: Currents caused by a failure on a transformer winding depend on the source, neutral grounding…

Q: 4. The load cycle of a three-phase 100 kVA, 11/0.4 kV, 50HZ transformer for one day is given in the…

A: Lp

Q: In a load test on transformer the no load voltage is 240V. The terminal voltage drop is 225V on…

A:

Q: 11) Which phenomenon is used in transformer to change the values of alternating voltages and…

A: Given that Which phenomenon is used in transformer to change the values of alternating voltages and…

Q: 3. WRITE IN DETAIL ABOUT TRANSFOERMER, WHAT IS STEP DOWN TRANSFORMER USED FOR? with the help of…

A: A transformer is a static device, which converts electrical power from one circuit to the other…

Q: Then the primary current

A:

Q: A transformer rated at a maximum of 25kVA supplies a 12kW load at power factor 0.60 lagging. a) What…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Single phase 10 kVA, 480 V / 120 V to feed a 120 V load from a 600 V source conventional transformer…

A:

Q: A single phase 1.1 KVA, 50 Hz, 220/110 transformer has an Iron losses = 80 W and equivalent…

A:

Q: 1) Calculate the maximum RMS current in p.u. that guarantees the equality of losses between the…

A: Given : KVA rating is 400 KVA PCP=6% Find the RMS value of current in PU  For 12 pulse converter…

Q: A 35KVA, transformer has 50 Hz frequency input with voltage values given as 300/220V, with primary…

A: It is given that: kVA=35 kVAf=50 HzV1V2=300220N1=550

Q: Ql-phase step down transformer 1250 KVA, 11000/2200 V, 50 Hz .The resistance /phase and leakage…

A:

Q: Hysteresis loss in a transformer can be minimized by using the core material having O High reactance…

A: Hysteresis loss is proportional to flux density.  Flux density can be reduced by using high…

Q: Two transformers A and B of different ratings but equal voltage ratios share a load of 900 kVA at…

A: Load  SL = 900 KVA   0.8 pf lagging transformer  A  rating is  600 KVA transformer  B  rating is…

Q: Ql-phase step down transformer 1250 KVA, 11000/2200 V, 50 Hz .The resistance /phase and leakage…

A:

Q: Whenever a conductor is placed in a magnetic field it experiences a force, this is related to motor.…

A:

Q: In small transformers, the total iron losses may vary from % of the rated output. O 0.5 to 1 O 0.2…

A: They can either be graphite or precious metal brushes which have electrical motor connections. To…

Q: A load of 200 kW at 0.85 power factor is to pe shared by two transformers A and B aving the same…

A:

Q: A 100VA single-phase transformer inside a refrigerator has 100 turns in its primary coil and 20…

A:

Q: For the given circuit below, a step down transformer gives an RMS voltage of 230 V/ 13.7- 0-13.7 V…

A: Solve as  below

Q: A voltage multiplier has 12 stages Capacitances, all equal to 0.08 μF. The supply transformer…

A: Given:No. of stages=12C=0.08 μFf=100 HzVm=150 kVIL=0.006 A

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

A: Rated output (S) = 300 kVA Power factor (ϕ) = 0.6 We have to find the rated power output and the…

Q: Two transformers A and B of ratings 500 KVA and 250 KVA are supplying a load KVA of 750 at e.8…

A: Open circuit voltage VAO=400 volt impedance for transformer A, ZA=RA+jXA×Voc2KVAA…

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…

Q: A single-phase transformer is required to step down the voltage from 1100 V to 230 V at 50 Hz. The…

A: It is given that: V1=1100 VV2=230 Vf=50 Hzϕ=0.20 Wb

Q: Multiple choice questions: 1- A voltages of 50Hz transformer are 1500 V on primary and 600 V on the…

A:

Q: A 220/1100 V transformer takes no- load current of 3A and absorbs 150 W. What is no load power…

A: A 220/1100 V transformer has, No load current (Io)= 3 Amp No load power (Po)= 150

Q: 7- A 5KVA, 220/110v, SOHZ 1-phase transformer has Regt and Xeqt of 0.968Q and 1.9630 respectively.…

A: Solution - Given data, 5 KVA, 220/110V 1-phase transformer f = 50 Hz Req1 = 0.968 ohm Xeq1 = 1.963…

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.