Electrical Controls

Circuit defects are being discussed.
Technician A says an open can be only on the ground side of the circuit.
Technician B says an unwanted resistance can result from a corroded connector.
Who is correct?

• A only
• B only
• Both A and B
• Neither A nor B

Testing the fuse is being discussed.
Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test the circuit.
Who is correct?

• A only
• B only
• Both A and B
• Neither A nor B

Testing the fuse is being discussed.
Technician A says sometimes a visual inspection of a fuse or fusible link does not reveal that it is open.
Technician B says to use a jumper wire to bypass the fuse in order to test the circuit.
Who is correct?

• A only
• B only
• Both A and B
• Neither A nor B

Testing of a switch is being discussed. Technician A says a switch can be tested with a voltmeter.
Technician B says to use a fused jumper wire to see if the switch is operating.
Who is correct?

• A only
• B only
• Both A and B
• Neither A nor B

Testing of a potentiometer is being discussed. Technician A says a voltmeter can be used if jumper wires are connected to the wire connector and sensor to gain access to the test points.
Technician B says the wires can be pierced to test for voltage.
Who is correct?

• A only
• B only
• Both A and B 
• Neither A nor B

A normally ____ switch will not allow current flow when it is in its rest position. A normally ____ switch will allow current flow when it is in its rest position

• open, closed
• closed, open
• short, ground

A ____is used in electronic circuits as a very fast switching device.

• Diode
• Relay
• Transistor
• Rectifer

 A ____is an electrical one-way check valve that will allow current to flow in one direction only.

• Diode
• Relay
• Transistor
• Rectifer

A ____is an electromechanical device that uses low current to control a high-current circuit.

• Diode
• Transistor
• Relay 
• Rectifer

Which of the following is the correct statement?

• An open means there is continuity in the circuit
• A short bypasses a portion of the circuit
• High-amperage draw indicates an open circuit
• High resistance in a circuit increases current flow.