ANSWERS TO QUESTIONS Q1. THROUGH Q33.

A1. By heating it.
A2. Because the negatively charged electrons are attracted to the positively charged plate.
A3. Filament and plate.
A4. Negative.
A5. Positive.
A6. Pulsating dc.
A7. Thoriated-tungsten and oxide-coated metals.
A8. They reach operating temperatures quickly.
A9. It serves as a mounting for the tube elements and as the terminal connection to the circuit.
A10. The linear portion.
A11. Plate resistant R_p.
A12. Peak Inverse Voltage (PIV).
A13. The triode contains a third element called the control rid.
A14. Because it is closer to the cathode.
A15. A plate load resistor R_L
A16. To prevent them from drawing grid current.
A17. The input signal
A18. +275 volts.

A19. 100 volts. 180 out of phase.
A20. Cutoff. Saturation.
A21. Cathode biasing.
A22. Through the use of a bypass capacitor
A23. rkg, the cathode to grid resistance.
A24. Unequal charge and discharge paths of the coupling capacitor C _c.
A25. Class B. Class C Class A.
A26. 42.
A27. 340 volts.
A28. The changes in plate current and grid voltage.
A29. 240 volts.
A30. The interelectrode capacitance (cpg) is divided between two series capacitances; thus, cpg is greatly reduced.
A31. Secondary emission, and noise.
A32. Secondary emission.
A33. Plate, positive. Suppressor grid, negative. Cathode, can be negative, positive, or at dc ground potential, depending on biasing type. Control grid, negative.