ERCOT SYSTEM LATEST
OPERATOR
CERTIFICATION EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
A resistance of 5 ohms is connected to a resistance of 10 ohms in an
electric circuit. What is the total resistance if the two resistances are
connected (i) in series and (ii) in parallel? - ANSWERS-(i) 15 ohms (ii)
3.33 ohms
The output of a generating unit is 500 MW. Express this value in watts. -
ANSWERS-500,000,000 watts
What is the scheduled system frequency in ERCOT? At this frequency,
what is the time in seconds for the voltage to move from a peak value to
a zero crossing? - ANSWERS-60 HZ, .0042 seconds
What is the phase relationship between voltage and current in a purely
inductive circuit? - ANSWERS-Voltage leads current by 90
What is the total or complex power required by a load if the active
power is 500 KW and the reactive power is 100 KVAR? What is the
power factor of this load? - ANSWERS-509.9 KVA, 0.98
END OF
PAGE 1
OPERATOR
CERTIFICATION EXAM
QUESTIONS AND
ANSWERS 2026 - 2027
A resistance of 5 ohms is connected to a resistance of 10 ohms in an
electric circuit. What is the total resistance if the two resistances are
connected (i) in series and (ii) in parallel? - ANSWERS-(i) 15 ohms (ii)
3.33 ohms
The output of a generating unit is 500 MW. Express this value in watts. -
ANSWERS-500,000,000 watts
What is the scheduled system frequency in ERCOT? At this frequency,
what is the time in seconds for the voltage to move from a peak value to
a zero crossing? - ANSWERS-60 HZ, .0042 seconds
What is the phase relationship between voltage and current in a purely
inductive circuit? - ANSWERS-Voltage leads current by 90
What is the total or complex power required by a load if the active
power is 500 KW and the reactive power is 100 KVAR? What is the
power factor of this load? - ANSWERS-509.9 KVA, 0.98
END OF
PAGE 1
