GETCO Exam Paper (22-07-2015) The instantaneous value of power in purely inductive circuit is zero none of this changing constant zero none of this changing constant ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The instantaneous value of power in purely inductive circuit is changing as it is given as v*i. The average power of purely inductive circuit over a cycle is zero
GETCO Exam Paper (22-07-2015) Calculate torque developed by the 3-phase, 5 HP, 4 pole induction motor runs at 1500 rpm 0 N-m 23.5 N-m 10 N-m 22 N-m 0 N-m 23.5 N-m 10 N-m 22 N-m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP P = 2πTN/60 where N is speed in rpm
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 3 + j6 3 - j6 1 + j2 9 + j10 3 + j6 3 - j6 1 + j2 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In rotating electrical machines, the insulation temperature limit for class B type is 105˚C 180˚C 130˚C 150˚C 105˚C 180˚C 130˚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) In the standard B-H curve X axis and Y axis intercepts respctively represents Flux and MMF residual magnetism and coercive force Hysteresis loss and Flux coercive force and residual magnetism Flux and MMF residual magnetism and coercive force Hysteresis loss and Flux coercive force and residual magnetism ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The Y bus matrix is a sparse matrix because … bus incidence matrix is a sparse matrix Y primitive is a sparse matrix no of lines are less lines are connected to less no. of buses bus incidence matrix is a sparse matrix Y primitive is a sparse matrix no of lines are less lines are connected to less no. of buses ANSWER DOWNLOAD EXAMIANS APP
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