Weston standard cell at 20°C has voltage of _______ volts

Related Mcqs:

1. A battery of 6 cells will show a drop of _______ volts from fully charged state to fully discharged state

   A. 1.0
   B. 1.5
   C. 2.4
   D. 2.9

2. Self charge of a Ni-Fe cell is _______ Edison cell

   A. equal to
   B. less than
   C. more than
   D. much more than

3. The average charging voltage for alkali cell is about__________?

   A. 1 V
   B. 1.2 V
   C. 1.7 V
   D. 2.1 V

4. As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of___________?

   A. reducing time of charging
   B. increasing cell capacity
   C. both (A) and (B)
   D. avoiding excessive gassing

5. The open circuit voltage of any storage cell depends wholly upon___________?

   A. its chemical constituents
   B. on the strength of its electrolyte
   C. its temperature
   D. all above

6. As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its__________?

   A. compactness
   B. lower e.m.f.
   C. small quantity of electrolyte used
   D. higher internal resistance

7. The internal resistance of an alkali cell is nearly _________ times that of the lead-acid cell

   A. two
   B. three
   C. four
   D. five

8. When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in___________?

   A. charged state
   B. discharged state
   C. both (A) and (B)
   D. active state

9. When the lead-acid cell is fully charged, the electrolyte assumes _______ appearance

   A. dull
   B. reddish
   C. bright
   D. milky

10. In constant voltage charging method, the charging current from discharged to fully charged condition_____________?

    A. decreases
    B. increases
    C. remains constant
    D. none of the above