41. The specific gravity of acid is checked with the help of a
a. hygrometer
b. lectometer
c. hydrometer
d. cell tester
42. Which of the following statements is not correct? A lead accumulator of 20 ampere hour can supply
a. 20 A of current for 20 hours
b. 1 A of current for 20 hours
c. 20 A of current for 1 hour
d. 0.1 A of current for 200 hours
43. The term trickle charge is associated with
a. dry cells
b. silver zinc batteries
c. lead acid batteries
d. nickel iron batteries
44. When the battery is being charged , the terminal voltage decreases with
a. increasing charging rate
b. increasing state of charge
c. increasing temperature
d. all of the above
45. When the battery is being discharged , the terminal voltage decreases with
a. decreasing discharged tube
b. decreasing state of charge
c. decreasing temperature
d. none of the above
46. The ampere hour capacity of a battery used on trucks is
a. 5 – 10 Ah
b. 30 – 60 Ah
c. 100 – 150 Ah
d. 200 – 250 Ah
47. The ampere hour capacity of a battery used on cars is
a. 5 – 10 Ah
b. 30 – 60 Ah
c. 100 – 150 Ah
d 200 – 250 Ah
48. Which battery is used in aeroplanes
a. dry cell battery
b. lead acid battery
c. Edison cell
d. None of the above
49. Which test is used to ascertain whether the battery plates are defective or not
a. cadmium test
b. high discharge test
c. open volt test
d. specific gravity test
50. Which of the following is the common voltage of automobile batteries
a. 2 V
b. 10 V
c. 12 V
d. 25 V
