A very strange fault i cam across today,that i never experienced not studied before, i need an answer for this. Phase to phase or line to line , L1,L2 & L3, voltages are 490VAC, but if i use line to ground , its again 490 VAC. . . whats the fault and theory behind of it?

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can any body sand me previous exampapers of jr. engineer (mechanical)

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what is advantage and disadvantage of forward curve and backward curve blade of an id fan impeller and FD fan impeller??

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Name the device which converts sound energy into mechanical energy?

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How do you convert feet into square feet?

1 Answers  

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A fan is handling hot air at 285 degC with flow of 411635 m3/hr, power consumed is 1165kW and efficiency is 66%. what will happen to flow, power and efficiency of the fan if a water spray system is introduced to reduce the air temperature up to 200 degC? (also please refer any document regarding this)

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What is the date, first titan launch from cape canaveral?

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What are the steps taken in troubleshooting of a machine e.g extruder

1 Answers   L&T, MAHINDRA, ME,

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"In refrigeration, why during operations is running low pressure at the suction side?"

2 Answers   RRB,

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difference between strainer and filter

24 Answers  

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What Equilibrium?

3 Answers   SVNIT,

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What is the thermal efficiency of a diesel engine?

0 Answers   RRB,

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