ATT COMP TEST LATEST
What are three steps for repairing digital systems? - ANSWERS-Fault
detection, isolation, and correction.
An IC's internal malfunctions make its operation _______________. -
ANSWERS-unpredictable
What are the three most common IC faults? - ANSWERS-Opens, shorts,
and faulty power supply units.
What component changes color to indicate an element change is needed
in dry air systems? - ANSWERS-Telltale oil filters.
What type of cooling is used in sealed enclosures? - ANSWERS-Air-to-
air.
What cooling system uses chilled water for both standby and normal
operation? - ANSWERS-Type 3.
Signal tracing - ANSWERS-If no fault found after voltage or current
measurements, next trace signal with a logic probe.
END OF
PAGE
1
, ATT COMP TEST LATEST
Two types of signal tracing? - ANSWERS-Sequential and half splitting.
What is the purpose of a transformer? - ANSWERS-To increase or
decrease voltage depending on requirements of the load.
What does Pout equal in a transformer? - ANSWERS-Pin.
What principle do transformers operate on? - ANSWERS-Mutual
inductance.
What is mutual inductance in transformers? - ANSWERS-The ability of
magnetic field of one coil to induce voltage in the second coil.
A step-down transformer _____________ output voltage in the
secondary. - ANSWERS-decreases
A step-up transformer ___________ output voltage in the secondary. -
ANSWERS-increases
What is electrical Shock? - ANSWERS-A sensation and muscular spasm
when electric current passes through the body.
END OF
PAGE
2
What are three steps for repairing digital systems? - ANSWERS-Fault
detection, isolation, and correction.
An IC's internal malfunctions make its operation _______________. -
ANSWERS-unpredictable
What are the three most common IC faults? - ANSWERS-Opens, shorts,
and faulty power supply units.
What component changes color to indicate an element change is needed
in dry air systems? - ANSWERS-Telltale oil filters.
What type of cooling is used in sealed enclosures? - ANSWERS-Air-to-
air.
What cooling system uses chilled water for both standby and normal
operation? - ANSWERS-Type 3.
Signal tracing - ANSWERS-If no fault found after voltage or current
measurements, next trace signal with a logic probe.
END OF
PAGE
1
, ATT COMP TEST LATEST
Two types of signal tracing? - ANSWERS-Sequential and half splitting.
What is the purpose of a transformer? - ANSWERS-To increase or
decrease voltage depending on requirements of the load.
What does Pout equal in a transformer? - ANSWERS-Pin.
What principle do transformers operate on? - ANSWERS-Mutual
inductance.
What is mutual inductance in transformers? - ANSWERS-The ability of
magnetic field of one coil to induce voltage in the second coil.
A step-down transformer _____________ output voltage in the
secondary. - ANSWERS-decreases
A step-up transformer ___________ output voltage in the secondary. -
ANSWERS-increases
What is electrical Shock? - ANSWERS-A sensation and muscular spasm
when electric current passes through the body.
END OF
PAGE
2
