The hot resistance of an incandescent lamp is about ___ times its cold resistance.



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  1. In an ac circuit with XL and R in seriesa the
  2. How many coulombs are delivered by a storage battery in 25 hours if it is supplying current at the rate…
  3. What does a capacitor store?
  4. What is a closed path made of several branches of the network called?
  5. Which of the following capacitors are used only in dc circuits?
  6. What can be used to estimate resonant frequency and to find reactance at any frequency for any value…
  7. Which of the following is not considered a physical factor affecting resistance?
  8. Which of the following combination of length and cross-sectional area will give a certain volume of…
  9. What is the total resistance of a two equal valued resistors in series?
  10. A rheostat is a form of
  11. A trigger circuit consisting of a capacitor of 0.01 F is connected in series with a resistor. If the…
  12. When capacitors are connected in seriesa the total capacitance is
  13. If two complex conjugates are addeda ___ components results.
  14. At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage…
  15. Which of the following has a positive temperature coefficient?
  16. For greater accuracya the value of phase angle should be determined from
  17. Property of an electric circuit that dissipates electric energy
  18. The admittance of a parallel RLC circuit is found to be the ___ sum of conductance and susceptances.
  19. Electric energy refers to
  20. A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a…
  21. The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfera…
  22. If the inductance is decreaseda the impedance of the circuit containing a resistor a capacitor and an…
  23. An electric circuit contains
  24. Which of the statements below is not true?
  25. A real current source has
  26. What theorem is usually used in the analysis of transistor circuit?
  27. The voltage lags the current by cycle in a
  28. When two pure sine waves of the same frequency and the same amplitude which are exactly 180 outof-phase…
  29. Refers to the outward-curving distortion of the lines of force near the edges of two parallel metal…
  30. In an ac circuit with a resistive branch and an inductive branch in parallela the