MGVCL Exam Paper (30-07-2021 Shift 3) Which of the following medium is used between CPU and RAM to speed up the processing power of a CPU? Flash memory Virtual memory Cache memory DRAM Flash memory Virtual memory Cache memory DRAM ANSWER DOWNLOAD EXAMIANS APP
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. 0.75 H 0.25 H 0.5 H 1.25 H 0.75 H 0.25 H 0.5 H 1.25 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) Consider the following statements associated with Buchholz’s relays.Statement 1: Buchholz's relay is used for protection of a transformer against incipient faults.Statement 2: Buchholz's relay can be installed on oil cooled transformers. Both Statement 1 and Statement 2 are TRUE Statement 1 is TRUE and Statement 2 is FALSE Statement 1 is FALSE and Statement 2 is TRUE Both Statement 1 and Statement 2 are FALSE Both Statement 1 and Statement 2 are TRUE Statement 1 is TRUE and Statement 2 is FALSE Statement 1 is FALSE and Statement 2 is TRUE Both Statement 1 and Statement 2 are FALSE ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Buchholz relay is used for protecting transformer against incipient or internal faults.Buchholz relay is a gas-actuated relay installed in oil immersed transformers for protection against all kinds of faults.
MGVCL Exam Paper (30-07-2021 Shift 3) If a cable of homogeneous insulation has maximum stress of 6 kV/mm, then the dielectric strength of insulation should be ____ 1.5 kV/mm 3 kV/mm 6 kv/mm 12 kV/mm 1.5 kV/mm 3 kV/mm 6 kv/mm 12 kV/mm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If a cable have homogeneous insulation then the dielectric strength of insulation should be is equal to maximum dielectric strength.
MGVCL Exam Paper (30-07-2021 Shift 3) In a power network, 375 kV is recorded at a 400 kV bus. A 45 MVAR, 400 kV shunt reactor is connected to the bus. What is the reactive power absorbed by the shunt reactor? 69.55 MVAR 39.55 MVAR 59.55 MVAR 49.55 MVAR 69.55 MVAR 39.55 MVAR 59.55 MVAR 49.55 MVAR ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Q = V²/XX = 400²/45= 3555.55 ohmFor 375 kV,Q = 375²/3555.55= 39.55 kVAR
MGVCL Exam Paper (30-07-2021 Shift 3) Nairobi negotiations are related to which of the following Organisation? The United Nations Children's Fund UNESCO World Trade Organisation World Economic Forum The United Nations Children's Fund UNESCO World Trade Organisation World Economic Forum ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS