10 2-5. Which of the following diagrams represents a twin-input triode? 1. 2. 3. 4. 2-6. What advantage(s) does the in-line grid arrangement of the power pentode have over the staggered grid arrangement of the conventional pentode? 1. Higher efficiency 2. Higher power output 3. Both 1 and 2 above 4. Smaller current requirement 2-7. Which of the following is an advantage that a power pentode has over a conventional pentode? 1. Greater opposition to electron flow 2. Higher gain because of staggered grids 3. Greater sensitivity to small signals 4. Smaller plate current obtained from large signals 2-8. What is the primary purpose of the beam-forming plates in the beam-power tube? 1. To concentrate the electrons into a beam 2. To catch any stray electrons in the tube 3. To act as an extension of the cathode 4. To give the tube the appearance of a pentode 2-9. Which of the following is a name given to the variable-mu tube? 1. Sharp-cutoff tube 2. Remote-cutoff tube 3. Variable-spaced tube 4. Reversible-bias tube 2-10. What is the symbol for "mu"? 1. m2. b3. I 4. L
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