EGSA Set 10 - Troubleshoot System
Problems Exam Questions And Answers
When troubleshooting a running system with rotating diodes, a low
voltage is detected. What is likely the cause?
A - An open diode.
B - Shorted diode.
C- Reverse biased diode.
D- There is no problem. Rotating diode systems are only low voltage
systems. -
correct answer ✅B - Shorted diode. A shorted diode will cause one
half of the rectifier to draw full current at no volts.
In a DC starting system, which of the following would cause the
solenoid to chatter and the system not to start?
A - E-stop depressed
B - High temperature warning
C- Faulty solenoid
D- Weak batteries -
correct answer ✅D - Weak batteries.
Troubleshooting should never be:
, EGSA Set 10 - Troubleshoot System
Problems Exam Questions And Answers
A - Done methodically section by section.
B - Documented to prevent steps already performed.
C - Used as a means to find the root cause of the problem.
D - Done as quickly as possible to get the system back on line. -
correct answer ✅D - Done as quickly as possible. Produces sloppy
work.
An ANSI device 50 detects:
A - Under voltage
B - Under frequency
C - Over current
D - Under current -
correct answer ✅C - Overcurrent. An ANSI device 50 is an
instantaneous over-current relay.
During a load test the frequency keeps dropping as more load is
added. The governor is checked and the actuator is NOT at the full
ON position. What is most likely the problem?
A - No problem, frequency normally drops during periods of heavy
loads.
Problems Exam Questions And Answers
When troubleshooting a running system with rotating diodes, a low
voltage is detected. What is likely the cause?
A - An open diode.
B - Shorted diode.
C- Reverse biased diode.
D- There is no problem. Rotating diode systems are only low voltage
systems. -
correct answer ✅B - Shorted diode. A shorted diode will cause one
half of the rectifier to draw full current at no volts.
In a DC starting system, which of the following would cause the
solenoid to chatter and the system not to start?
A - E-stop depressed
B - High temperature warning
C- Faulty solenoid
D- Weak batteries -
correct answer ✅D - Weak batteries.
Troubleshooting should never be:
, EGSA Set 10 - Troubleshoot System
Problems Exam Questions And Answers
A - Done methodically section by section.
B - Documented to prevent steps already performed.
C - Used as a means to find the root cause of the problem.
D - Done as quickly as possible to get the system back on line. -
correct answer ✅D - Done as quickly as possible. Produces sloppy
work.
An ANSI device 50 detects:
A - Under voltage
B - Under frequency
C - Over current
D - Under current -
correct answer ✅C - Overcurrent. An ANSI device 50 is an
instantaneous over-current relay.
During a load test the frequency keeps dropping as more load is
added. The governor is checked and the actuator is NOT at the full
ON position. What is most likely the problem?
A - No problem, frequency normally drops during periods of heavy
loads.
