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Assignment Questions - 14188_254
Assignment Questions - 14188_256

Neets Module 16-Introduction to Test Equipment
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15 Figure 2A.—Shunt ammeter. IN ANSWERING QUESTIONS 2-16 THROUGH 2-19, REFER TO FIGURE 2A.   THE METER IN THE CIRCUIT IS DESIGNED FOR MAXIMUM OF .001 AMPERE AND HAS AN INTERNAL RESISTANCE OF 10 OHMS.  YOU ARE FIGURING THE SHUNT RESISTANCE NECESSARY TO MEASURE 5 AMPERES. 2-16.   What is the voltage drop across the meter coil? 1.        .01 volt 2.      .005 volt 3.    .0001 volt 4.    .0005 volt 2-17.   What is the voltage drop across the shunt resistance?    1.      .01 volt 2.      .005 volt 3.    .0001 volt 4.    .0005 volt 2-18.   When the meter is deflected full scale and is measuring 5 amperes, what is the maximum value of current flow through the shunt resistance? 1.    0.010  ampere 2.    0.490  ampere 3.    4.999  ampere 4.    5          amperes 2-19.   What is the approximate value of the shunt resistance? 1.    .001 ohm 2.    .002 ohm 3.    .003 ohm 4.    .004 ohm 2-20.   Simple range-switching arrangements for current meters are less satisfactory than other methods of range switching for which of the following reasons? 1.    Meter damage can occur when line current momentarily flows through the meter 2.    Resistance in the contacts may cause inaccurate readings 3.    Both 1 and 2 above 4.    Resistor damage may occur Figure 2B.—Ammeter connections. IN ANSWERING QUESTION 2-21, REFER TO FIGURE 2B. 2-21.   In the figure, five ammeters are connected to the circuit resistors.  Of those five, which one(s) is/are connected correctly? 1.    E only 2.    A and E 3.    A and C 4.    A, B, and D






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