Answer the following statement(s) true (T) or false (F)
1. some limited slip differentials are gear based (no internal clutches) units that transfer torque from a slipping wheel to the wheel with more traction.
2. bearings pressed onto the axle should be removed with heat from a torch and a hammer and drift punch.
3. a limited slip differential may be checked ( in the vehicle) with the breakaway torque check.
4. bearing cups hold bearing adjusters in a place in the differential.
5. axle saver bearings are available for some systems where the axle bearing has damaged the axle surface where it rides.
1. True
2. False
3. True
4. False
5. True
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Which of the following is required to build reliable condition-base maintenance (CBM) profiles for electronically monitored truck chassis components?
A. good preventative maintenance B. telematic data mining C. tough enforcement of DOT standards D. rigorous driver circle checks
An entry-level geophysical position requires a master's degree
Indicate whether the statement is true or false
Determine the current PCR for this section. Then, assume a new roughness measurement is expected soon. If the PCR falls below 60, the section will be scheduled for rehabilitation. Determine the new IRI value that will trigger the rehabilitation.
An agency uses the following formula to determine pavement condition rating:
PCR = 95.6 – 5.51 (5.0-ROUGH) – 1.59 LNALL – 0.221 AVGOUT – 0.0306 LONG –
0.531 TRAN
where:
ROUGH = roughness measured by present serviceability rating (PSR), scale of 0 to 5
LNALL = natural logarithm of alligator cracking, ft per mile
AVGOUT = outer wheel path rutting (all locations averaged), 0.01 inch
LONG = longitudinal cracking, ft per mile
TRAN = transverse cracking, number of cracks per mile
And, present serviceability rating is determined as:
A pavement section has the following distress data:
IRI = 105 in/mi
Alligator cracking = 110 ft/mi
Average rutting = 0.20 inch
Longitudinal cracks = 130 ft/mi
Transverse cracks = 12/mi
What will be an ideal response?
A lamp requires a current of 0.94 amps when connected to a circuit with a voltage of 120 volts. Find the resistance in ohms of the lamp. Carry the answer to two decimal places.
Fill in the blank(s) with the appropriate word(s).