Energy is the substance of which a physical object is composed.
Answer the following statement true (T) or false (F)
False
Rationale: Matter is the substance of which a physical object is composed.
You might also like to view...
A line-sensing control uses a mechanical thermostat or electrical controller to measure the _____.
a. actual pipe temperature b. ambient temperature surrounding the pipe c. estimated pipe temperature d. heat levels surrounding the pipe
A(n) ____ includes the chain and sprockets as well as chain guides and a tensioner for overhead cam (OHC) engines.
A. crankshaft kit B. timing chain set C. overhaul kit D. master kit
The vertical curved section of a handrail or guardrail is called a(n) _____
a. upturn b. gooseneck c. radius d. swan?s head
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.