MGVCL Exam Paper (30-07-2021 Shift 3) A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed? 882 rpm 1425 rpm 798 rpm 1575 rpm 882 rpm 1425 rpm 798 rpm 1575 rpm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Slip of the induction motor,S = (Ns - Nr)/NsNs = (120*f)/PPoles (P) = 61400 = (120*f)/6f = 70 HzFor P = 10Ns = (120*70)/10= 840 rpmNr = Ns(1 - S)= 840*(1 - 0.05)= 798 rpm
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. 1.25 H 0.25 H 0.75 H 0.5 H 1.25 H 0.25 H 0.75 H 0.5 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) Arunachal Pradesh does not share its borders with which one of the following nations? Bangladesh China Bhutan Myanmar Bangladesh China Bhutan Myanmar 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 બનાવડાવી. મીઠાઈ તો હું જ બનવું ને! મેં મીઠાઈ બનાવી લીધી. હું મીઠાઈ બનાવવા લાગી. મેં મીઠાઈ બનાવડાવી. મીઠાઈ તો હું જ બનવું ને! મેં મીઠાઈ બનાવી લીધી. ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 3) સારું:નરસું::શુક્લ: ? અમર પરમ અવિશાની કૃષ્ણ અમર પરમ અવિશાની કૃષ્ણ ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 3) In which of the following situations, there is no need to provide directional overcurrent protection. double end fed, single feeder single end fed, parallel feeder single end fed, single feeder ring main double end fed, single feeder single end fed, parallel feeder single end fed, single feeder ring main ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Directional overcurrent relay protection is used for parallel feeder and ring main system.It is not used for the protection of radial system.
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