GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 6\7 2\3 5\6 7\8 6\7 2\3 5\6 7\8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP fractional pitch = Cos( α/2)α is obtain from: (nα/2)=90˚ where n is harmonicα=25.7143˚fractional pitch=6/7
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 all are correct neutral current is high if load is not balanced rotating magnetic field is produced neutral wire is not required, if load is balanced all are correct neutral current is high if load is not balanced rotating magnetic field is produced ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Who is the vice president of India? (As on 22/07/2015) Nazama heptulla O.P. Kohli Pranav Mukharjee Dr. Hamid Ansari Nazama heptulla O.P. Kohli Pranav Mukharjee Dr. Hamid Ansari ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In synchronous motor, V-curve is a graph of Armature current Vs reactive power Armature current Vs power factor Armature current Vs active power Armature current Vs Field current Armature current Vs reactive power Armature current Vs power factor Armature current Vs active power Armature current Vs Field current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
GETCO Exam Paper (22-07-2015) Laplace transforms is used for finding transfer function of any systems for finding initial condition in a system converting non linear equation to linear equation converting diffential equation to algebraic equation finding transfer function of any systems for finding initial condition in a system converting non linear equation to linear equation converting diffential equation to algebraic equation ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following is a reason to decouple AVR and LFC loops when there is a shortage of reactive power? deference of error is the main reason angle of the voltage is not considered Change in voltage magnitude marginally affects real power AVR loop response is slower than LFC loop deference of error is the main reason angle of the voltage is not considered Change in voltage magnitude marginally affects real power AVR loop response is slower than LFC loop ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS