GETCO Exam Paper (22-07-2015) For a given transformer volte/turn for primary and secondary winding is same different depends on transformer design depends on load same different depends on transformer design depends on load ANSWER EXPLANATION DOWNLOAD EXAMIANS APP emf = 4.44*f*φ*Temf/T = 4.44*f*φ
GETCO Exam Paper (22-07-2015) Hopkinson's test is the test to be carried out on two identical induction motors induction motor with synchronous motor two identical DC motors induction motor with any DC motor two identical induction motors induction motor with synchronous motor two identical DC motors induction motor with any DC motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In hopkinson test known as regenerative testtwo identical machine coupledD.C shunt motorD.C shunt generatortemperature rise can be check under rated conditionlarge machine can be tested without drawing much power.
GETCO Exam Paper (22-07-2015) Which of the following is the most likely reason for large overshoot in a control system? high positive correcting torque High gain in a system high retarding torque presence of dead time delay high positive correcting torque High gain in a system high retarding torque presence of dead time delay ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on stator resistance stator reactance load current rotor resistance and reactance stator resistance stator reactance load current rotor resistance and reactance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) The PU impedance of a 1089 MVA, 33 kV generator is 1, the ohmic value of its impedance is: 0.5 1 10 100 0.5 1 10 100 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The relay which is most sensitive to power swings (mal operation) is Mho Relay Over current Relay Reactance Relay Impedance Relay Mho Relay Over current Relay Reactance Relay Impedance Relay ANSWER DOWNLOAD EXAMIANS APP
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