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? None of these Operating System Application Software System Environment None of these Operating System Application Software System Environment ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) મારુતારુંનો ઝગડો હજી ખતમ થયો નથી, ચારપાંચ વર્ષ થઇ ગયા અને રાતદિવસ સાથે ઉઠવા-બેસવાનું તો ચાલુ જ છે. ઉપરોક્ત વાક્યમાં ક્યા ક્યા વ્યાકરણીય સમાસનો ઉપયોગ કરાયો છે? અવ્યવીભાવ, મધ્યમપદલોપી તત્પુરુષ, દ્વન્દ્વ દ્વન્દ્વ, મધ્યમપદલોપી અવ્યવીભાવ, મધ્યમપદલોપી તત્પુરુષ, દ્વન્દ્વ દ્વન્દ્વ, મધ્યમપદલોપી ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is 1/25 5 25 1/5 1/25 5 25 1/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Energy stored by capacitor, Q = ½CV²Dielectric constant is directly proportional to C and capacitance is proportional to the dielectrical constant
MGVCL Exam Paper (30-07-2021 Shift 1) Which generation of computers used vacuum tubes? Second Generation Fourth Generation Third Generation First Generation Second Generation Fourth Generation Third Generation First Generation ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Consider the following two statements and choose the correct answer.Statement 1: The V-curves of a synchronous motor show relationship between armature current and supply voltage.Statement 2: The plot of power factor against the field current of synchronous motor is known as inverted V curves. Statement 1 is FALSE and Statement 2 is TRUE Both Statement 1 and Statement 2 are TRUE Statement 1 is TRUE and Statement 2 is FALSE Both Statement 1 and Statement 2 are FALSE Statement 1 is FALSE and Statement 2 is TRUE Both Statement 1 and Statement 2 are TRUE Statement 1 is TRUE and Statement 2 is FALSE Both Statement 1 and Statement 2 are FALSE ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The V-curves of a synchronous motor show relationship between Armature current (Ia) and Excitation current (If).The Inverted V-curves of a synchronous motor show relationship between power factor (pf) and field excitation (If).
MGVCL Exam Paper (30-07-2021 Shift 1) An alternator is supplying load of 300 kW at a power factor of 0.5 lagging. If the power factor is raised to unity, how many more kilowatts can alternator supply for the same kVA loading? 600 kW 150 kW 300 kW 450 kW 600 kW 150 kW 300 kW 450 kW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP P = S*cosφS = P/cosφS = 300/0.5S = 600 kVAFor same kVA rating and unity power factor,P = 600*1P = 600 kWPextra = 600 - 300Pextra = 300 kW
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