Which of the following statements is NOT correct?
A) All AB timers are more accurate than mechanical and electronic timers.
B) All AB timer instructions operate in nearly an identical fashion.
C) The accuracy of PLC timers can be affected by short scan time.
D) The TON, TOF and RTO timers are all output instructions.
C
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The purpose of contactor 2M shown in the figure above is to _____.
a. short motor leads T4, T5, and T6 during starting to connect motor windings in a wye configuration
b. energize motor leads T1, T2, and T3 for both wye and delta connections
c. energize motor leads T4, T5, and T6 during running to connect the motor windings in a delta configuration
d. connect resistors in series with the motor windings during the transition from start to run
If the antilock brake system fails, the vehicle cannot be driven
Indicate whether the statement is true or false
What network is defined as the current through (or voltage across) an element is equal to the algebraic sum of the currents (or voltages) that are produced by each source individually?
A. Terminal B. Linear C. Equivalent D. DC load line
To be successful, today's automotive technician must have ______.
A. a sound understanding of automotive technology B. on-the-job experience C. continuous training in new technology D. all answers are correct