T7D

Question 1

T7D01 (B)
Which instrument would you use to measure electric potential or electromotive force?

1 An ammeter
2 A voltmeter
3 A wavemeter
4 An ohmmeter

Answer 1

2 A voltmeter

Question 2

T7D02 (B)
What is the correct way to connect a voltmeter to a circuit?

1 In series with the circuit
2 In parallel with the circuit
3 In quadrature with the circuit
4 In phase with the circuit

Answer 2

In parallel with the circuit

Question 3

T7D03 (A)
How is a simple ammeter connected to a circuit?

1 In series with the circuit
2 In parallel with the circuit
3 In quadrature with the circuit
4 In phase with the circuit

Answer 3

1 In series with the circuit

Question 4

T7D04 (D)
Which instrument is used to measure electric current?

1 An ohmmeter
2 A wavemeter
3 A voltmeter
4 An ammeter

Answer 4

4 An ammeter

Question 5

T7D05 (D)
What instrument is used to measure resistance?

1 An oscilloscope
2 A spectrum analyzer
3 A noise bridge
4 An ohmmeter

Answer 5

4 An ohmmeter

Question 6

T7D06 (C)
Which of the following might damage a multimeter?

1 Measuring a voltage too small for the chosen scale
2 Leaving the meter in the milliamps position overnight
3 Attempting to measure voltage when using the
resistance setting
4 Not allowing it to warm up properly

Answer 6

3 Attempting to measure voltage when using the

resistance setting

Question 7

T7D11 (B)
Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?

1 Ensure that the applied voltages are correct
2 Ensure that the circuit is not powered
3 Ensure that the circuit is grounded
4 Ensure that the circuit is operating at the correct
frequency

Answer 7

2 Ensure that the circuit is not powered

Question 8

T7D12 (B)
Which of the following precautions should be taken when measuring high voltages with a voltmeter?

1 Ensure that the voltmeter has very low impedance
2 Ensure that the voltmeter and leads are rated for use
at the voltages to be measured
3 Ensure that the circuit is grounded through the
voltmeter
4 Ensure that the voltmeter is set to the correct
frequency

Answer 8

2 Ensure that the voltmeter and leads are rated for use

at the voltages to be measured