need electronics help?

  • Thread starter Thread starter Jeffery M
  • Start date Start date
J

Jeffery M

Guest
11. To measure an unknown line voltage at an electrical outlet,
A. set the function/range switch to 1000 volts DC/V and insert the test leads in the
outlet. Observe the polarity.
B. set the function/range switch to the highest ohm range and insert the test leads in
the outlet.
C. set the function/range switch to 10A-DC and place the red test lead in the 10 amp
jack. Insert the test leads in the outlet.
D. set the function/range switch to 750 volts ACV and insert the test leads in the
outlet.12. Assume that the function/range switch is on the 20 k? position and the multimeter displays
“1” when the test leads are across an unknown resistor. What would most likely
cause the meter to display “1” ?
A. A weak battery
B. The function/range switch not set on a high enough scale
C. A faulty ON/OFF switch
D. Shorted test leads13. When measuring current, always place the meter in
A. series with the circuit. C. the highest DC volts position.
B. the highest AC volts position. D. parallel with the circuit.14. Assume a device draws 50 mA of current and 150 VDC across it. What is its resistance?
A. .3 k? C. 7.5 k?
B. 3000 ? D. 7.5 ?15. What precaution should be observed when the multimeter isn’t being used?
A. The selector switch should be placed in the ohms postion.
B. The test leads should be shorted together.
C. The selector switch should be in the hFE postion.
D. The selector switch should be in the OFF position.
 
Back
Top