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
E. None of the above
Answer: Option B
This Question Belongs to Computer Science >> Electronic Principles
In an intrinsic semiconductor, the number of free electrons
A. Equals the number of holes
B. Is less than the number of holes
C. Is greater than the number of holes
D. Impossible to say
E. None of the above
A device that converts mechanical into electrical energy is?
A. solar cell
B. thermocouple
C. chemical cell
D. generator
E. None of the above
Which one of the following kinds of materials has the lowest permeability?
A. A diamagnetic material
B. A paramagnetic material
C. A feiTomagnetic material
D. All of the above
E. None of the above
The total impedance of a parallel RLC circuit:
A. always increases as the applied frequency increases
B. is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
C. always decreases as the applied frequency increases
D. is maximum at the resonant frequency
E. None of the above
Join The Discussion