What is 'commit' command in perl?

1043

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What is control key?

886

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Discuss the nature and types of secondary data sources. Also discuss the data research procedure

2472

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What is the difference between pim and pcm?

5

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What is open client in sybase?

811

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What are the various tags provided for better structuring in HTML5?

773

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Will there be a windows server 2016 r2?

287

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Is queue fifo or lifo?

843

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how to calculate Basic,DA,HRA and TA of employees salary?

6299

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why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain

2201

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Why did you choose to work with ibm mainframe cobol programming?

1038

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What are the other methods working as deployment functionality?

899

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How to load data from ms excel sheet to sap by using bdc method ? : abap bdc

1231

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How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

2180

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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.

1972

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