MGVCL Exam Paper (30-07-2021 Shift 1) ___ is the process of actuating equipment operation at remote locations. Data processing Supplementary control Supervisory control Data acquisition Data processing Supplementary control Supervisory control Data acquisition ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) Which of the following is an independent malicious program that spread copies of itself from computer to computer? Virus Trap door Worm Trojan horse Virus Trap door Worm Trojan horse ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) What are the states of the three ideal diodes of the circuit shown in figure ? D1 ON, D2 OFF, D3 ON D1 ON, D2 OFF, D3 OFF D1 OFF, D2 ON, D3 ON D1 OFF, D2 ON, D3 OFF D1 ON, D2 OFF, D3 ON D1 ON, D2 OFF, D3 OFF D1 OFF, D2 ON, D3 ON D1 OFF, D2 ON, D3 OFF ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For the given circuit shown in figure,D1 is forward bias mode - On stateD2 is in reverse bias mode - off stateD3 is in reverse bias mode - off state.
MGVCL Exam Paper (30-07-2021 Shift 1) A fully controlled natural commutated 3-phase bridge rectifier is operating with a firing angle α = 30°, The peak to peak voltage ripple expressed as a ratio of the peak output dc voltage at the output of the converter bridge is √3-1 1-(√3/2) 0.5 √3 -1 √3-1 1-(√3/2) 0.5 √3 -1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Where,φ is firing angleVoltage ripple for 3-phase bridge rectifier = cos(φ) = Cos(30)= 1/2
MGVCL Exam Paper (30-07-2021 Shift 1) The frequency of the emf in the stator of a 4-pole induction motor is 50 Hz, and that in the rotor is 2 Hz. What is the slip and at what speed is the motor running? 3%, 1455 rpm 4%, 1455 rpm 4%, 1440 rpm 3%, 1440 rpm 3%, 1455 rpm 4%, 1455 rpm 4%, 1440 rpm 3%, 1440 rpm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Rotor frequency, f_r = s*f_ss = 2/50s = 0.04Ns = 120f/PNs = 1500 rpms = (Ns - Nr)/NsNr = Ns(1 - s)Nr = 1500*(1 - 0.04)Nr = 1440 rpm
MGVCL Exam Paper (30-07-2021 Shift 1) Which of the following are the advantages of Aerial Bunched Cables (ABC)? Elimination of theft of energy Higher safety and reliability Reduced height of supports All of these Elimination of theft of energy Higher safety and reliability Reduced height of supports All of these ANSWER DOWNLOAD EXAMIANS APP
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