An ohmmeter measures ____________________ in an electrical circuit.
Fill in the blank(s) with the appropriate word(s).
resistance
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The length of the end pieces for a given radius is calculated by multiplying the center-to-center length by _____.
a. one-third b. one-half c. two-thirds d. two
Products that consist of all the necessary concrete forms and accessories are called _____.
a. packaged systems b. manufactured systems c. proprietary systems d. form unit systems
Describe the purpose of SPC in a distillation system.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. The silicon-controlled rectifier (SCR) is made by bonding four layers of semiconductor material together to form a pn–pn junction. 2. SCRs are known as the workhorses of industrial electronics because of their ability to control hundreds of volts and amps. 3. SCRs can be tested with an ohmmeter by connecting the negative lead to the anode and the positive lead to the cathode. 4. The amount of gate current supplied to the SCR is determined by the amount of resistance connected in the gate circuit, and the difference in voltage between the power supply and the terminal voltage of the battery. 5. The gate-turnoff SCR operates in a fashion similar to a common SCR in that it can be turned off with a gate pulse that is negative with respect to the cathode.