Free P1 Practice Questions

Question 1

A customer is angry because a part ordered last week arrived as the wrong number. What should the parts specialist do FIRST?

Accepted Answer

Listen to the complaint without interrupting

Answer

Explain the store's policy on returns and restocking fees

Answer

Offer a discount on the correct part to keep the customer's business

Answer

Ask the customer to bring the invoice to the counter for verification

Question 2

All of the following help a parts specialist build a useful profile of a fleet customer EXCEPT:

Accepted Answer

The number of drivers the fleet employs

Answer

The chassis serial numbers of the units in the fleet

Answer

The make and model of the major components on each unit

Answer

The location of the fleet's maintenance facility

Question 3

A customer questions the core charge listed on the invoice for a remanufactured alternator. Which explanation is correct?

Accepted Answer

It is a deposit that is refunded when an acceptable core is returned

Answer

It is the amount the rebuilder will pay for the old unit once it is returned

Answer

It is a non-refundable fee that covers the cost of remanufacturing the unit

Answer

It is a handling charge applied to every remanufactured part that is sold

Question 4

An electronic catalog shows that the part number a customer requested has been superseded. What is the correct action?

Accepted Answer

Supply the current number and verify whether additional hardware is required

Answer

Order the original number from a secondary supplier so the part matches exactly

Answer

Supply the current number, since a supersession always fits without changes

Answer

Advise the customer that the part has been discontinued

Question 5

A customer is deciding between an economy brake lining and a premium lining that costs noticeably more. What should the parts specialist do?

Accepted Answer

Explain what the premium lining offers in this application, then let the customer choose

Answer

Recommend the economy lining so that the customer's total repair cost stays as low as possible

Answer

Recommend the premium lining because it returns a higher gross profit to the store

Answer

Advise the customer that both linings will perform the same in normal service

Question 6

A customer needs pistons and injectors for a Cummins engine. Which item from the engine dataplate identifies the specific internal parts combination required?

Accepted Answer

The CPL (Critical Parts List) number

Answer

The advertised horsepower rating

Answer

The model year of the truck the engine is installed in

Answer

The engine family designation shown on the emissions label

Question 7

Supplemental coolant additives (SCAs) are maintained in a heavy-duty diesel cooling system primarily to:

Accepted Answer

Protect the cylinder liners from cavitation pitting

Answer

Raise the boiling point of the coolant during high-load operation

Answer

Lower the freeze point of the coolant in cold weather service

Answer

Extend the service life of the water pump shaft seal

Question 8

Which aftertreatment component sits directly upstream of the diesel particulate filter and produces the heat used during an active regeneration?

Accepted Answer

The diesel oxidation catalyst (DOC)

Answer

The selective catalytic reduction (SCR) catalyst

Answer

The exhaust gas recirculation (EGR) cooler

Answer

The ammonia slip catalyst

Question 9

An air brake chamber is identified as a Type 30. The number 30 indicates the:

Accepted Answer

Effective area of the diaphragm in square inches

Answer

Maximum air pressure in psi that the chamber will accept

Answer

Rated output force of the chamber in hundreds of pounds

Answer

Maximum allowable pushrod stroke in millimeters

Question 10

Which information is needed to select the correct replacement brake shoe and lining set?

Accepted Answer

Drum diameter and brake width

Answer

Brake chamber type and slack adjuster arm length

Answer

Wheel diameter and tire load rating

Answer

Axle manufacturer and drive axle ratio

Free P1 Practice Questions

Domain 1: Communications Skills 10% of exam

Question 1

Question 2

Domain 2: Sales Skills 13% of exam

Question 3

Question 4

Question 5

Domain 3: Vehicle Systems 67% of exam

Question 6

Question 7

Question 8

Question 9

Question 10

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