Electronic Principles - Section 4 Multiple Questions and Answers.




21.The dielectric constant of a material is a measure of:
A. the amount of voltage it can withstand before breaking down
B. how well the material concentrates electrostatic lines of force
C. the amount of opposition to the current flow
D. how well the material concentrates magnetic lines of force

22.What is the inductive reactance of a 2-H coil operating at 60 Hz?
A. 754 Ohm
B. 30 Ohm
C. 60 Ohm
D. 120 Ohm

23.When operating above its resonant frequency, a series RLC circuit has the characteristics of a:
A. series RL circuit
B. series RC circuit
C. series RLC circuit operated below its resonant frequency
D. purely resistive circuit

24.What is the primary difference between primary and secondary cell batteries?
A. Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged
B. Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged
C. Primary-cell batteries use chemical cells, whereas secondary-cell batteries use an alternative energy source, such as thermal or magnetic energy, to supplement their outputs
D. Primary-cell batteries must be recharged at a much slower rate that secondary-cell batteries

25.Which one of the following statements applies to common auto batteries?
A. Auto batteries are primary wet-cell batteries
B. Auto batteries are secondary wet-cell batteries
C. Auto batteries are secondary dry-cell batteries
D. Auto batteries are primary dry-cell batteries

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