Answer / mihir

ONAN-OIL NATURAL AIR NATURAL
ONAF- oil natural air forced
ofaf-oil forced air forced

Answer / k.prakashchandra

OD - oil direct is common.OFD probably means -Oil forced
direct.

What do you mean by ACB and VCB?

3 Answers   L&T,

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Two electrically operated Vibro Motors are fixed in parallel direction in vibrating feeder. What is the direction of both Vibro Motors?

1 Answers  

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Differentiate between voltage and current feedback in amplifiers?

0 Answers  

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FOR ELECTRICAL TRANSMISSION TOWER WHAT SHOULD BE THE MINIMUM HEIGHT FROM THE GROUND? AND WHAT SHOULD BE THE DISTANCE BETWEEN THE TWO CONDUCTOR?

1 Answers  

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what is form factor?

3 Answers  

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What is the technical formula to calculate the load taken by a motor in Amperes ?

2 Answers  

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Is it possible that Generator trip but Turbine not trip.Give explanation.

1 Answers   Essar,

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WHAT IS TANK CKT.?

4 Answers  

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1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.

0 Answers  

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how we can produce negative DC voltage ? please explain it .,thank u

1 Answers  

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why low pressure side of the turbine is connected to the alternator and not the high pressure side??

1 Answers  

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What is the difference between DOL starter and star delta starter

0 Answers  

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