The total internal resistance of an ohmmeter having a 5V internal battery and using a 1mA meter movement is?
by Tila on Jan.15, 2012, under Multimeter
The total internal resistance of an ohmmeter having a 5V internal battery and using a 1mA meter movement is?
A. 2000 ohms
B. 3000 ohms
C. 4000 ohms
D. 5000 ohms
A voltmeter with a 20V full scale indication at 1mA has an internal resistance of 1500 ohms. What multiplier resistor value is required for the voltmeter?
A. 20000 ohms
B. 18500 ohms
C. 2000 ohms
D. 1850 ohms
A 0-1 mA meter with an internal resistance of 1000 ohms is converted to a 0-10mA meter.
What is the value of shunt resistance needed for full-scale deflection at 10mA?
A. 144.4 ohms
B. 111.1 ohms
C. 0.144 ohms
D. 0.111 ohms
An ohmmeter is connected in…
A. Series with the component being measured
B. Parallel with the voltage source
C. Series/parallel to the circuit
D. Parallel with the component being measured
A voltmeter uses a 1mA, 1500 ohms meter movement. What total circuit resistance is required for a 20V full scale indication?
A. 20 ohms
B. 200 ohms
C. 2000 ohms
D. 20000 ohms
To connect an ammeter in a circuit…
A. Open the circuit at one point and insert the ammeter to complete the circuit.
B. Attach the test leads across the component to be measured
C. Remove the power from the circuit
D. Attach the test leads across the voltage source
An ohmmeter is adjusted for zero ohms when
A. The test leads are shorted
B. The test leads are open
C. A known resistance is measured
D. Circuit power is off
A multiplier for a voltmeter is…
A. A high resistance in parallel with the meter movement
B. Usually less than the meter resistance
C. A high Resistance in series with the meter movement
D. Usually equal to the meter Resistance
A milliammeter shunt…
A. Decreases the range
B. Is connected in series with the meter
C. Increases the range
D. converts the meter to a voltmeter
What is the current flowing in an ohmmeter when it indicates infinite Resistance
A. Minimum
B. Maximum
C. Halfway between minimum and maximum
D. None of the above
Please answer as many questions as you can. It would really mean a lot to me if you could me with these questions.
Thanks
