Saskatchewan Automotive Service Technician
Practice Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of engine oil in a vehicle?
a) To cool the brakes
b) To improve fuel efficiency
c) To lubricate engine components
d) To increase horsepower
Engine oil reduces friction between moving engine parts and helps
prevent wear and overheating.
2. A vehicle is experiencing hard starting on a cold morning. Which
component is most likely causing the problem?
a) Alternator
b) Fuel filter
c) Battery
d) Radiator
Cold weather reduces battery output, making it harder to start the
engine.
3. Which type of brake system uses a master cylinder and hydraulic
lines to actuate the brakes?
a) Mechanical
b) Air
c) Hydraulic
d) Vacuum
, Hydraulic brakes use fluid pressure to transfer force from the pedal
to the brake calipers.
4. What is the function of a catalytic converter?
a) To reduce engine temperature
b) To filter oil
c) To reduce harmful exhaust emissions
d) To increase fuel octane
The catalytic converter converts harmful gases such as CO, NOx,
and hydrocarbons into less harmful substances.
5. What does a multimeter measure?
a) Engine compression
b) Tire pressure
c) Voltage, current, and resistance
d) Fuel flow
A multimeter can measure electrical properties like voltage,
current, and resistance in circuits.
6. Which of the following tire pressures is correct for most passenger
vehicles?
a) 20 psi
b) 35 psi
c) Depends on manufacturer specifications
d) 50 psi
Tire pressure varies depending on vehicle type and load; always
follow the manufacturer’s recommendation.
7. What is the purpose of a thermostat in a cooling system?
a) To circulate coolant continuously
b) To lubricate the water pump
, c) To regulate engine temperature
d) To measure coolant level
The thermostat opens and closes to maintain the engine at
optimal operating temperature.
8. Which fluid is used in automatic transmissions?
a) Engine oil
b) Brake fluid
c) ATF (Automatic Transmission Fluid)
d) Coolant
ATF lubricates the transmission, enables smooth gear shifts, and
cools internal components.
9. A squealing noise from the front of the engine while starting is
usually caused by:
a) Worn brake pads
b) Faulty alternator
c) Loose serpentine belt
d) Low engine oil
A worn or loose serpentine belt can slip and create a squealing
sound.
10. When performing a compression test, what is a normal
reading for a healthy cylinder?
a) 20-40 psi
b) 50-70 psi
c) 120-200 psi
d) 250-300 psi
Normal compression ensures proper combustion; values below
100 psi indicate engine problems.
Practice Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of engine oil in a vehicle?
a) To cool the brakes
b) To improve fuel efficiency
c) To lubricate engine components
d) To increase horsepower
Engine oil reduces friction between moving engine parts and helps
prevent wear and overheating.
2. A vehicle is experiencing hard starting on a cold morning. Which
component is most likely causing the problem?
a) Alternator
b) Fuel filter
c) Battery
d) Radiator
Cold weather reduces battery output, making it harder to start the
engine.
3. Which type of brake system uses a master cylinder and hydraulic
lines to actuate the brakes?
a) Mechanical
b) Air
c) Hydraulic
d) Vacuum
, Hydraulic brakes use fluid pressure to transfer force from the pedal
to the brake calipers.
4. What is the function of a catalytic converter?
a) To reduce engine temperature
b) To filter oil
c) To reduce harmful exhaust emissions
d) To increase fuel octane
The catalytic converter converts harmful gases such as CO, NOx,
and hydrocarbons into less harmful substances.
5. What does a multimeter measure?
a) Engine compression
b) Tire pressure
c) Voltage, current, and resistance
d) Fuel flow
A multimeter can measure electrical properties like voltage,
current, and resistance in circuits.
6. Which of the following tire pressures is correct for most passenger
vehicles?
a) 20 psi
b) 35 psi
c) Depends on manufacturer specifications
d) 50 psi
Tire pressure varies depending on vehicle type and load; always
follow the manufacturer’s recommendation.
7. What is the purpose of a thermostat in a cooling system?
a) To circulate coolant continuously
b) To lubricate the water pump
, c) To regulate engine temperature
d) To measure coolant level
The thermostat opens and closes to maintain the engine at
optimal operating temperature.
8. Which fluid is used in automatic transmissions?
a) Engine oil
b) Brake fluid
c) ATF (Automatic Transmission Fluid)
d) Coolant
ATF lubricates the transmission, enables smooth gear shifts, and
cools internal components.
9. A squealing noise from the front of the engine while starting is
usually caused by:
a) Worn brake pads
b) Faulty alternator
c) Loose serpentine belt
d) Low engine oil
A worn or loose serpentine belt can slip and create a squealing
sound.
10. When performing a compression test, what is a normal
reading for a healthy cylinder?
a) 20-40 psi
b) 50-70 psi
c) 120-200 psi
d) 250-300 psi
Normal compression ensures proper combustion; values below
100 psi indicate engine problems.
