ASE A7 HVAC Final 10th Grade - University Quiz

ASE A7 HVAC Final

Assessment

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John Boulanger

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Life Skills

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10th Grade - University

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11 plays

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Hard

Student preview

20 questions

Show all answers

MULTIPLE CHOICE

2 mins • 1 pt

A vehicle's air conditioning performance is reduced at low speeds and stop lights, but cools at highway speeds. Which of these is MOST likely the cause of this condition?

MULTIPLE CHOICE

2 mins • 1 pt

A frozen spot is noticed in the center of the condenser. Technician A says a frozen spot on a component or connection indicates a restriction in the system. Technician B says this is caused Too much freon. Who is correct?

MULTIPLE CHOICE

2 mins • 1 pt

A technician is diagnosing a vehicle's air conditioning system. The vehicle has good engine performance, but the air conditioner is blowing warm air only. A yellow substance is noticed around the evaporator case drip tube. Technician A says this is coolant leaking from the heater core. Technician B says this is fluorescent dye leaking from the evaporator core. Which technician is MOST likely correct?

MULTIPLE CHOICE

2 mins • 1 pt

Two technicians are discussing electric cooling fans and air conditioning performance. Technician A says electric fans regulate refrigerant temperatures more precisely than belt driven fans do. Technician B says electric cooling fans are controlled by control modules that use temperature and pressure actuated sensors and switches. Who is correct?

MULTIPLE CHOICE

2 mins • 1 pt

Technician A says the clutch relay protects the control head from the clutch circuit's high current. Technician B says open clutch relay windings result in compressor clutch engagement at all times. Who is correct?

MULTIPLE CHOICE

2 mins • 1 pt

All of these are true about an air conditioner's evaporator EXCEPT:

MULTIPLE CHOICE

2 mins • 1 pt

A blower motor operates only in high speed. Technician A says there could be a short in the motor's power feed. Technician B says it may have a faulty blower motor resistor. Who is correct?

MULTIPLE CHOICE

2 mins • 1 pt

A compressor clutch coil is being tested. There is 12 volts at the connector and the ground is good. The resistance of the coil is 0.00 Ohms. Technician A says the coil has an open in it's windings. Technician B says the clutch coil has a short and has failed the resistance test. Who is correct?

MULTIPLE CHOICE

2 mins • 1 pt

The carpet is wet on the passenger's side of a vehicle. Technician A says this may be caused by a leaking heater core. Technician B says this could be caused by a clogged evaporator case drain tube. Who is correct?

10.

MULTIPLE CHOICE

2 mins • 1 pt

An EATC air conditioning system has low fan speed operation during high demand situations, like in direct sunlight. Technician A says this is because something is covering the sun load sensor's photo diode. Technician B says a sun load sensor is a variable resistor and can be tested with an ohmmeter. Who is correct?

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