Page 40 - Apprentice Manual_Neat

83. What are the most common parameters monitored on the control panels of generators?

a. PF, Watts, Amps
b. PF, Watts, VAC
c. VAC, Amps, Hz
d. Watts, Amps, VAC

84. Why must an ammeter selector switch be the “make-before break” type?

a. To prevent voltage spikes and power surges
b. To prevent arcing and current flow interruption
c. To prevent over-current situations
d. Ammeter selector switches are “break-before-make”

85. Are DC gauges ever found on engine control panels?

a. No, AC is what is being generated and what needs to be monitored
b. Yes, the DC used to create the generator field only
c. Yes, engine functions such as oil pressure, water temperature, and DC voltmeter and or
ammeter
d. No, any DC signals are converted to AC so that only one type of gauge must be purchased
and stocked

86. Mod Bus is:

a. A universal communications protocol and system
b. A modular electrical bus system used to change amounts and direction of current
c. A modernized data bus carrying various manufacturers protocols
d. A commuter bus with a generator to supply power to the modern commuter carrying laptop
PCs, Portable DVD players, etc

87. Which symptom best describes the failure of an over-speed sensor?

a. Engine starts, but then will not progress past idle
b. Engine will not start
c. Engine starts and oscillates between idle and full RPM repeatedly
d. Engine starts, proceeds to full RPM, but then shuts down immediately

88. Why should fault indicators never be combined?

a. For quick isolation of a problem
b. Major problems may be masked by minor faults
c. Small problems may shut down the entire system
d. All of the above

EGSA Apprentice Certification Program Study Guide - Page 32