DGVCL Exam Paper (11-12-2011) Permittivity is expressed in terms of farad/sq. m. Farad/m N/m Weber /m farad/sq. m. Farad/m N/m Weber /m ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) In the protection of transformers, harmonic restraint is used to guard against Unbalanced protection Switching over voltages Lightning Magnetizing inrush current Unbalanced protection Switching over voltages Lightning Magnetizing inrush current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Initial inrush of magnetizing currents have high component of even and odd harmonics.2nd - 63%3rd -26.8%4th- 5.1%5th- 4.1%6th- 3.77th-2.4
DGVCL Exam Paper (11-12-2011) The main advantage of using fractional pitch winding is to refuce Size of the machine Amount of copper in the winding Cost of the machine Harmonics in the generated emf Size of the machine Amount of copper in the winding Cost of the machine Harmonics in the generated emf ANSWER EXPLANATION DOWNLOAD EXAMIANS APP due to fractional pitch EMF can be approximately made into sine wavelosses due to harmonics reducedsaving in conductor materialmechanical strength of coil is increased.
DGVCL Exam Paper (11-12-2011) A device connected to the computer which converts digital signals to analog and vice-versa is CPU Modem UPS Keyboard CPU Modem UPS Keyboard ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) If the percentage reactance of the system upto the point of fault is 20% and the base kVA is 10,000 the short ciruit kVA is 20 MVA 10 MVA 50 MVA 60 MVA 20 MVA 10 MVA 50 MVA 60 MVA ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Short circuit kVA = Base kVA/%X
DGVCL Exam Paper (11-12-2011) What happens to the contents of RAM (Random Access Memory) when the power of the computer is turned off? Content remains intact Content is transferred to other memory Content gets corrupted Content is lost Content remains intact Content is transferred to other memory Content gets corrupted Content is lost ANSWER DOWNLOAD EXAMIANS APP
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