NERC PREP EXAMINATION SET 2026 SOLVED QUESTIONS GRADED A+

NERC PREP EXAMINATION SET 2026
SOLVED QUESTIONS GRADED A+

● Using the values in the box, what is ACE?
Bias = -50MW/0.1Hz
Fs = 60 Hz
Fa = 59.99 Hz
NIa = 150 MW
Nis = 150 MW


a. 0 MW b. 5 MW c. -5 MW d. -50 MW. Answer: c. -5 MW


● Using these values in the box, what is ACE?
Bias = -50MW/0.1Hz
Fs = 60 Hz
Fa = 60.01 Hz
NIa = 160 MW
Nis = 150 MW


a. -10 MW b. 5 MW c. 10 MW d. 15 MW. Answer: d. 15 MW

, ● A system operator notices that frequency has dropped to 59.95 Hz and
his Balancing Area's ACE is near zero. What is this Balancing Areas
response to this frequency?
Bias = -50MW/0.1Hz
Fs = 60 Hz
Fa = 59.95 Hz
Nis = 0 MW


a. 50 MW b. 25 MW c. 0 MW d. -25 MW. Answer: b. 25 MW


● Your Balancing Area's ACE is zero when suddenly frequency dropped
to 59.95 Hz due to an external loss of generation. What is this Balancing
Areas ACE?
Bias = -50MW/0.1Hz
Fs = 60 Hz
Fa = 59.95 Hz
Nis = 0 MW


a. 50 MW b. 25 MW c. 0 MW d. -25 MW. Answer: c. 0 MW


● Automatic Generation Control (AGC) uses which calculated value to
determine when generators should increase or decrease output?