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MCQs

Total Questions : 199 | Page 13 of 20 pages
Question 121.  Primary batteries, unlike secondary batteries, may be:
  1.    charged once
  2.    used once
  3.    recharged over and over
  4.    stored indefinitely
 Discuss Question
Answer: Option B. -> used once
Question 122.  In practical applications, battery voltage:
  1.    is restored as soon as disconnect occurs
  2.    is lowered as the load increases
  3.    may be stored indefinitely
  4.    will be reduced to zero as power is drawn
 Discuss Question
Answer: Option B. -> is lowered as the load increases
Question 123.  A voltage will influence current only if the circuit is:
  1.    open
  2.    insulated
  3.    high resistance
  4.    closed
 Discuss Question
Answer: Option D. -> closed
Question 124.  Which resistive component is designed to be temperature sensitive?
  1.    Thermistor
  2.    Rheostat
  3.    Potentiometer
  4.    Photoconductive cell
 Discuss Question
Answer: Option A. -> Thermistor
Question 125.  The negative and positive charge symbols are assigned (in that order) to the:
  1.    proton and electron
  2.    electron and proton
  3.    atom and nucleus
  4.    electron and element
 Discuss Question
Answer: Option B. -> electron and proton
Question 126.  A voltmeter is used:
  1.    to measure current
  2.    in series with the circuit
  3.    in parallel with the circuit
  4.    to measure coulombs
 Discuss Question
Answer: Option C. -> in parallel with the circuit
Question 127. . Current equals:
  1.    coulombs/time
  2.    coulombs × time
  3.    voltage/time
  4.    voltage × time
 Discuss Question
Answer: Option A. -> coulombs/time
Question 128. . If the current in a circuit equals 0 A, it is likely that the
  1.    voltage is too high
  2.    resistance is too low
  3.    circuit has a short
  4.    circuit is open
 Discuss Question
Answer: Option D. -> circuit is open
Question 129. . Which voltage source converts chemical energy to electrical energy?
  1.    Electrical generator
  2.    Battery
  3.    Solar cell
  4.    Electronic power supply
 Discuss Question
Answer: Option B. -> Battery
Question 130. . What are the unit and symbol for current?
  1.    Ampere, A
  2.    Coulomb, I
  3.    Ampere, Q
  4.    Ampere, I
 Discuss Question
Answer: Option D. -> Ampere, I

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