Observation

The expected response is:

FOUR BASIC PRINCIPLES GUIDING A REFRIGERATION TECHNICIAN DURING MECHANICAL OPERATION IN THE WORK SHOP

(i) Adequate knowledge of the work/what need to be done

(ii) Knowledge of safety/follow approved safety procedure

(iii) Selection of appropriate tools and materials

(iv) Keep all refrigeration mechanism clean and dry Majority of the students responded correctly to this question.