Technician A says that most current engine brakes use the engine ECM to manage braking cycles. Technician B says that modern engine brakes can perform the majority of the braking requirements of a transport truck. Who is right?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: A
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While having a discussion, Technician A says that bushings should always be lubricated. Technician B says that bushings should not be lubricated. Lubricants attract dirt and can sometimes damage the bushing material. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Which of the following defines the broadening of a pulse due to different propagation velocities of the spectral components of the light pulse?
A. Polarization mode dispersion B. Modal dispersion C. Microbending D. Chromatic dispersion
SERCOS is ________
A) A low-cost communications single cable network with input and output devices with an embedded microprocessor for network communications B) A digital motion control network that interfaces the motion control module in the PLC with the servo motor drive through a fiber optic cable C) An open network standard that uses the producer/consumer network model to efficiently exchange time-critical application information in control systems D) An open industrial networking standard that takes advantage of commercial off-the-shelf Ethernet hardware
Evaluate:
