MODULE 3 CHAPTER 5 QUIZ 6

Question Number. 51. If the insulation resistance of a lead/acid battery is down, it indicates. 

Option A. case leakage. 

Option B. leakage between positive and negative terminals. 

Option C. intercell leakage.

 Correct Answer is. case leakage.
 Explanation. NIL .................................

.Question Number. 52. When the battery is connected to the aircraft, which terminal should you connect first?. 

Option A. Any.

Option B. Positive.

Option C. Negative.

Correct Answer is. Positive.

Explanation. Aircraft Electricity and Electronics Eismin Page 43 ................................

..Question Number. 53. An ammeter in a battery charging system is for the purpose of indicating the.
 Option A. rate of current used to charge the battery.

Option B. amperage available for use. 
Option C. total amperes being used in the aeroplane.

Correct Answer is. rate of current used to charge the battery.

Explanation. Whilst charging (as the question says) the ammeter shows current flow TO the battery ..................................

Question Number. 54. For how many hours will a 140AH battery deliver 15A?.

Option A. 9.33 hours.

Option B. 27.25 hours.

Option C. 15.15 hours. Correct Answer is. 9.33 hours.

Explanation. 15 * H = 140, H = 9.33 hrs ..................................

Question Number. 55. What part of a nickel-cadmium cell helps to prevent thermal runaway?.

Option A. The separator.

Option B. The negative plate.

Option C. The positive plate.

Correct Answer is. The separator.

Explanation. Aircraft Electricity and Electronics Eismin Page 47 2nd para ..................................

Question Number. 56. When charging current is applied to a nickel-cadmium battery, the cells emit gas only.

Option A. when the electrolyte level is low.

Option B. if the cells are defective. ...

Option C. toward the end of the charging cycle.

Correct Answer is. toward the end of the charging cycle.

Explanation. EEL/1-3 4.5.5 ..................................

Question Number. 57. What is the internal resistance of a battery?.

Option A. The resistance measured across the two terminals.

Option B. The resistance measured when the battery is half charged.

Option C. The resistance present inside the battery while connected to a load.

Correct Answer is. The resistance present inside the battery while connected to a load