[amp_mcq option1=”Ah” option2=”Vh” option3=”Wh” option4=”kWh” correct=”option3″]
Electrolysis and storage of batteries
2. When a lead-acid battery is in fully charged condition, the color of its positive plate is
[amp_mcq option1=”dark grey” option2=”brown” option3=”dark brown” option4=”none of above” correct=”option1″]
3. Batteries are charged by
[amp_mcq option1=”rectifiers” option2=”engine generator sets” option3=”motor generator sets” option4=”any one of the above methods” correct=”option4″]
4. Battery container should be acid resistance, therefore it is made up of
[amp_mcq option1=”glass” option2=”plastic” option3=”wood” option4=”all above” correct=”option1″]
Detailed SolutionBattery container should be acid resistance, therefore it is made up of
5. If a battery is wrongly connected on charge following will happen
[amp_mcq option1=”current delivered by the battery will be high” option2=”current drawing will be nil” option3=”current drawing will be very small” option4=”current drawing will be very high” correct=”option4″]
Detailed SolutionIf a battery is wrongly connected on charge following will happen
6. When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance
[amp_mcq option1=”dull” option2=”reddish” option3=”bright” option4=”milky” correct=”option3″]
Detailed SolutionWhen the lead-acid cell is fully charged, the electrolyte assumes _____ appearance
7. Mercury cell has which of the following characteristics?
[amp_mcq option1=”Flat discharge current-voltage curve” option2=”High power to weight ratio” option3=”Comparatively longer shelf life under adverse conditions of high temperature and humidity” option4=”All of the above” correct=”option4″]
Detailed SolutionMercury cell has which of the following characteristics?
8. Life of the batteries is in the following ascending order.
[amp_mcq option1=”Lead-acid cell, Edison cell, Nickel cadmium cell” option2=”Lead-acid cell, Nickel-cadmium cell, Edison cell” option3=”Edison cell, Nickel-cadmium cell, lead-acid cell” option4=”Nickel-cadmium cell, Edison cell, lead-acid cell” correct=”option2″]
Detailed SolutionLife of the batteries is in the following ascending order.
9. In order that a hydrometer may float vertically in electrolyte its C.G. should be
[amp_mcq option1=”lowered” option2=”raised” option3=”undisturbed” option4=”displaced sideways” correct=”option1″]
Detailed SolutionIn order that a hydrometer may float vertically in electrolyte its C.G. should be
10. Over charging
[amp_mcq option1=”produces excessive gassing” option2=”loosens the active material” option3=”increases the temperature resulting in buckling of plates” option4=”all above” correct=”option4″]