T7D01
Which instrument would you use to measure electric potential?
-
A
An ammeter
-
B
A voltmeter
-
C
A potentiometer
-
D
An ohmmeter
T7D02
How is a voltmeter connected to a component to measure applied voltage?
-
A
In series
-
B
In parallel
-
C
In quadrature
-
D
In phase
T7D03
When configured to measure current, how is a multimeter connected to a component?
-
A
In series
-
B
In parallel
-
C
In quadrature
-
D
In phase
T7D04
Which instrument is used to measure electric current?
-
A
An ohmmeter
-
B
An electrometer
-
C
A voltmeter
-
D
An ammeter
T7D05
How does an ohmmeter measure the resistance of a circuit or component?
-
A
By applying a small current and measuring the resulting voltage
-
B
By placing a variable resistor in parallel with the circuit
-
C
By placing a variable resistor in series with the circuit
-
D
By applying a variable voltage and measuring the resulting current change
T7D06
Which of the following can damage a multimeter?
-
A
Attempting to measure resistance using the voltage setting
-
B
Failing to connect one of the probes to ground
-
C
Attempting to measure voltage when using the resistance setting
-
D
Not allowing it to warm up properly
T7D07
Which of the following measurements are made using a multimeter?
-
A
Signal strength and noise
-
B
Impedance and reactance
-
C
Voltage and resistance
-
D
All these choices are correct
T7D08
Which of the following types of solder should not be used for radio and electronic applications?
-
A
Acid-core solder
-
B
Lead-tin solder
-
C
Rosin-core solder
-
D
Tin-copper solder
T7D09
What is the characteristic appearance of a cold tin-lead solder joint?
-
A
Dark black spots
-
B
A bright or shiny surface
-
C
A rough or lumpy surface
-
D
A greenish tinge
T7D10
What reading indicates that an ohmmeter is connected across a large, discharged capacitor?
-
A
Increasing resistance with time
-
B
Decreasing resistance with time
-
C
Steady full-scale reading
-
D
Alternating between open and short circuit
T7D11
Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?
-
A
Ensure that the applied voltages are correct
-
B
Ensure that the circuit is not powered
-
C
Ensure that the circuit is grounded
-
D
Ensure that the circuit is operating at the correct frequency