MGVCL Exam Paper (30-07-2021 Shift 3) The current in the coil of a large electromagnet falls from 6 A to 2 A in 10 ms. The induced emf across the coil is 100 V. Find the self-inductance of the coil. 0.25 H 0.5 H 1.25 H 0.75 H 0.25 H 0.5 H 1.25 H 0.75 H ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equation of self inductance:V = Ls*(di/dt)Ls = V/(di/dt)= 100/((6 - 2)/(0.01))= 0.250 H= 250 mH
MGVCL Exam Paper (30-07-2021 Shift 3) What is the value of the characteristic impedance of a transmission line with impedance and admittance of 15 and 5? 1.732 0.577 0.7.7 1.414 1.732 0.577 0.7.7 1.414 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Characteristic impedance = √(impedance/admittance) = 1.73
MGVCL Exam Paper (30-07-2021 Shift 3) A single phase full converter bridge, connected to 230 V, 50 Hz source is feeding a load R =10 Ω in series with a large inductance that makes the load current ripple free. For a firing angle of 450, calculate the rectification efficiency. 76.66% 63.66% 50.55% 28.33% 76.66% 63.66% 50.55% 28.33% ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Rectification efficiency = DC output power/AC input power
MGVCL Exam Paper (30-07-2021 Shift 3) Data Encryption Standard (DES) was designed by None of these Apple Microsoft IBM None of these Apple Microsoft IBM ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 3) મેં મીઠાઈ બનાવી'. વાક્યને કેવળ ક્રિયાપદની પ્રેરક રચના કઈ છે? હું મીઠાઈ બનાવવા લાગી. મેં મીઠાઈ બનાવી લીધી. મીઠાઈ તો હું જ બનવું ને! મેં મીઠાઈ બનાવડાવી. હું મીઠાઈ બનાવવા લાગી. મેં મીઠાઈ બનાવી લીધી. મીઠાઈ તો હું જ બનવું ને! મેં મીઠાઈ બનાવડાવી. ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 3) સારું:નરસું::શુક્લ: ? અમર કૃષ્ણ અવિશાની પરમ અમર કૃષ્ણ અવિશાની પરમ ANSWER DOWNLOAD EXAMIANS APP
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