How can the SCR be tested with an ohmmeter?
What will be an ideal response?
To test the SCR with an ohmmeter, connect the positive output lead of the ohmmeter to the anode and the negative lead to the cathode. The ohmmeter should indicate no continuity. Touch the gate of the SCR to the anode. The ohmmeter should indicate continuity through the SCR. When the gate lead is removed from the anode, conduction may stop or continue depending on whether the ohmmeter is supplying enough current to keep the device above its holding current level. If the ohmmeter indicates continuity through the SCR before the gate is touched to the anode, the SCR is shorted. If the ohmmeter will not indicate continuity through the SCR after the gate has been touched to the anode, the SCR is open.
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a. lime in the cement b. chemicals in the water c. fine sand particles d. abrasion
What caused the carrier pigeon to become extinct?
What will be an ideal response?
Considering fuel shortages and high prices, the heat-circulating fireplace unit is desirable because it provides an emergency source of heat and helps lower the overall price of heating a home.
Answer the following statement true (T) or false (F)
An air-conditioning system cools the interior of the vehicle by ________.
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