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DR Engineering Services Interview Questions
Questions Answers Views Company eMail

I want to know how to calculate the size of electricity cable in building?

2017

Post New DR Engineering Services Interview Questions




Un-Answered Questions

we want to control pump in let pressure and tank (for exp) our inlet line if water cam and pump will on and when our tank will full pump will off also if our inlet pressure low pump will off even tank not full.this pump i want to uses on our water supply line.

1715


what is dotnet architecture? can anyone explain that.

4410


Main configuration file and command used for NFS enabling exported directories and deamons?

1041


How unix is used?

896


What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

2194


Is the primary key an index?

1026


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.

2037


What does the append?

1005


What are different types of joins in LINQ?

131


What is qtpro? What is quick test pro?

1058


How does apache flume work?

132


What does c mean before a date?

1183


what is windows azure compute emulator?

745


What's your management style?

1199


What is a contract? : fi- accounts payable

1144