MGVCL Exam Paper (30-07-2021 Shift 1) જ્વાળા: ધુમાડો:: બરફ : ___ તાપમાન શીતળતા બાષ્પ ગરમી તાપમાન શીતળતા બાષ્પ ગરમી 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. increases marginally decreases marginally increases by 30% remains unaltered increases marginally decreases marginally increases by 30% remains unaltered ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) For protection of inter-turn fault in transformer, the relays preferred are Buchholz's relay, overcurrent relay and differential relay Overcurrent relay and Buchholz's relay Overcurrent relay and differential relay Buchholz's relay and differential relay Buchholz's relay, overcurrent relay and differential relay Overcurrent relay and Buchholz's relay Overcurrent relay and differential relay Buchholz's relay and differential relay ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Intern turn winding fault can be easily detect by differential protection relay.Also detect by buchholz relay (gas operated relay), cause buchholz relay is used to detect the internal fault of transformer.
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) Find the word which is correctly spelt from the given options. Various Abolishid Absurrd Wrinkel Various Abolishid Absurrd Wrinkel ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Which of the following is the layer of a computer system between the hardware and the user program? Operating System System Environment None of these Application Software Operating System System Environment None of these Application Software ANSWER DOWNLOAD EXAMIANS APP
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