What system are EGRs and DPFs part of?
A. Fuel system.
B. Intake circuit
C. Breathing circuit
D. Exhaust circuit.
Answer: C
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The purpose of contactor 2M shown in Figure 3 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
Determine the expected rut depth of the fourth layer of a 4” thick HMA flexible pavement surface divided into four equal sub-layers for the following conditions: Resilient or elastic strain calculated by the structural response model at the middepth of each HMA sub-layer, in/in = 45 × 10-6 Number of axle load repetitions = 1.5 × 104 Mixture field calibration constants below:
?1r, = 0.99 ?2r, = 0.98 ?3 = 0.95 What will be an ideal response?
The system used to measure the efficiency of room air conditioners is:
A) EER - energy efficiency ratio. B) SEER - seasonal energy efficiency ratio. C) CSPF - cooling seasonal performance factor. D) AFUE - annual fuel utilization efficiency.
A common source of vacuum for boosters used on diesel engines is ________
A) Exhaust manifold B) Carburetor C) Auxiliary vacuum pump D) Intake manifold