ASE Heating and Air Conditioning Multiple Choice Practice Test

Question 1 of 3
65% Get this Question Right
A vac door actuator is being tested. When vac is applied wtih a pump the door does not move and the reading on the gauge is 0. Tech Y says it is because the door is binding or obstructed. Tech Z says the actuator is defective. Who's right?
Tech Y
Both Tech Y and Z
Tech Z
Neither Tech Y nor Z