20. The part labe l led S is used for A. protection B. conduction C. support D. a r mouring 21. The part that conducts electricity is labeled A. S B. T C. U D. V 22. Bus - bar trunking is mostly used to supply main in A. farm installation B. floor of multi - floor flats C. bungalow installations D. storey building 23 . Which of the following insulator is not advisable for use in place where temperature exceeds 75 °C? A. Porcelain B. Fireclay C. Mica D. PVC Study the circuit diagram below and answer questions 24 and 25 24. The circuit diagram illustrates a A. series wound generator B. shunt wound generator C. separately excited generator D. compound wound generator. 25. The part labeled X is A. an armature winding B. a regulator C. a resistor D. a field winding 26. The voltage operated earth leakage circuits breaker is used in A. swampy area B. rock area C. damp area D. oily area https://stcharlesedu.com