MGVCL Exam Paper (30-07-2021 Shift 1) જ્વાળા: ધુમાડો:: બરફ : ___ ગરમી તાપમાન શીતળતા બાષ્પ ગરમી તાપમાન શીતળતા બાષ્પ ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Two-wattmeter method is used to measure the power taken by a 3-phase induction motor on no load. The wattmeter readings are 375 W and –50 W. Calculate the reactive power taken by the load. 425/√3 VAR 425√3 VAR 325/√3 VAR 325√3 VAR 425/√3 VAR 425√3 VAR 325/√3 VAR 325√3 VAR ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Reactive power taken, Q = √3*(W1 - W2)Q = √3*(375 + 50)Q = √3*425 kVAR
MGVCL Exam Paper (30-07-2021 Shift 1) A fully controlled natural commutated 3-phase bridge rectifier is operating with a firing angle α = 30°, The peak to peak voltage ripple expressed as a ratio of the peak output dc voltage at the output of the converter bridge is 0.5 √3 -1 √3-1 1-(√3/2) 0.5 √3 -1 √3-1 1-(√3/2) ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Where,φ is firing angleVoltage ripple for 3-phase bridge rectifier = cos(φ) = Cos(30)= 1/2
MGVCL Exam Paper (30-07-2021 Shift 1) Find the word which is correctly spelt from the given options. Absurrd Abolishid Wrinkel Various Absurrd Abolishid Wrinkel Various ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) A transformer designed for operation at 60 Hz supply is working at 50 Hz supply system without changing its voltage and current ratings. Compared to the full load efficiency at 60 Hz, the full load transformer efficiency at 50 Hz. remains unaltered decreases marginally increases by 30% increases marginally remains unaltered decreases marginally increases by 30% increases marginally ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) In 2019, India stands ___ position in the consumption of electricity in the world. Fourth Third First Second Fourth Third First Second ANSWER EXPLANATION DOWNLOAD EXAMIANS APP As per the key statistics data of IEA With electricity consumption reached to 1,164 TWh in the country till November 2019, India ranked third among the top ten electricity consuming countries across the globe.
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