GETCO Exam Paper (22-07-2015) The Z matrix of 2 port network is given by [0.9 0.2 : 0.2 0.6]. The element Y22 of the corresponding Y matrix of the same network is given by 1.8 0.4 1.2 -0.4 1.8 0.4 1.2 -0.4 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on load current stator reactance stator resistance rotor resistance and reactance load current stator reactance stator resistance rotor resistance and reactance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) In case of a balanced three phase sinusoidal AC supply, because of the phase difference neutral wire is not required, if load is balanced rotating magnetic field is produced neutral current is high if load is not balanced all are correct neutral wire is not required, if load is balanced rotating magnetic field is produced neutral current is high if load is not balanced all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) No load efficiency of tranformer is _____ than full load efficiency same depends on load greater lesser same depends on load greater lesser ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 130˚C 105˚C 180˚C 150˚C 130˚C 105˚C 180˚C 150˚C ANSWER EXPLANATION DOWNLOAD EXAMIANS APP insulation Class and temperature limit(in ˚C) is given below:Y - 90A- 105E- 120B-130F-155H-180C- above 180
GETCO Exam Paper (22-07-2015) The line current in a three phase unbalanced load are Ir= 4+j6, Ib= 2-j2 and Ic= -3+j2, then zero sequence component of current will be 9 + j10 1 + j2 3 - j6 3 + j6 9 + j10 1 + j2 3 - j6 3 + j6 ANSWER DOWNLOAD EXAMIANS APP
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