GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on rotor resistance and reactance stator resistance stator reactance load current rotor resistance and reactance stator resistance stator reactance load current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) Stray loss is equal to _____ frictional loss & copper loss copper loss and iron loss mechanical loss & iron loss field copper loss & iron loss frictional loss & copper loss copper loss and iron loss mechanical loss & iron loss field copper loss & iron loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “mechanical loss & iron loss ”.Many times stray loss is also considered as total loss actually accured minus calculatable loss. This means loss that can be calculated is known as stray loss.
GETCO Exam Paper (22-07-2015) The surge impedance loading of the line will _____ if the length of the line is double double become half four times remains same double become half four times remains same ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Surge impedance is independent of length of the line
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 3 + j6 3 - j6 9 + j10 1 + j2 3 + j6 3 - j6 9 + j10 1 + j2 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a DC motor, back EMF value becomes maximum at _____ 3/4 load full load 1/2 load no load 3/4 load full load 1/2 load no load ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “1/2 load ”.
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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