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Home==>makaut-es-ee-basic-electrical-enginnering

eduhilfe Latest Questions

Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

10(c). What will happen if a DC supply is given to a transformer?

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

10(b). A 125kVA transformer having primary voltage of 2000 V at 50 Hz has 182 primary and 40 secondary turns. Neglecting losses, calculate.

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i) full load primary and secondary currents, ii) the no-lead secondary induced emf, iii) the max. flux in the core.

makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

10(a). Draw an equivalent circuit and phasor diagram at rated load ( lagging power factor ) of a single phase tranformer.

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

9(c). Draw and explain B-H curve of a magnetic material. What is Eddy current loss and Hysteresis loss and how can these be minimized.

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

9(a). State and explain Thevenin’s theorem.

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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  • 18 Views
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

8(c). What is Inverter ? Discuss the working principle of full bridge iverter with neat circuit diagram and waveforms.

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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  • 8 Views
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

8(b). Explain why a dc series motor should not be started without a load?

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

8(a). How many types of power are there? Explain with their units. Establish their relationship using power triangle.

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
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Sayani saha
Asked: January 26, 2021In: MAKAUT

7(c). Draw speed vs torque characteristics of 3-phase induction motor. Can an induction motor run in synchronous speed?

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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Sayani saha
  • 0
Sayani saha
Asked: January 26, 2021In: MAKAUT

7(b). A 3-phase 6-pole 50 Hz induction motor has a slip of 1% at no load and 3% at full load. Determine (i) synchronous speed, (ii) no load speed, (iii) full load speed, (iv) frequency of rotor current at standstill, (v) frequency of rotor current at full load.

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makaut-2019makaut-es-ee-basic-electrical-enginneringsem-1
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