1.Equipment Classifications in BS 2754 & BS3535 are identified as:
(a) Class I, II and A
(b) Class A, B and II
(c) Class I, B and C
(d) Class I, II and III
2. Electrical equipment maintenance is a statutory requirement within the:
(a) lEE Wiring Regulations
(0) Electricity at Work Regulations 1989
(c) Health and Safety at Work etc. Act 1974
(d) Electricity Supply Regulations 1988
3. The two most important safety tests to be performed on Class I equipment may be considered to be:
(a) Earth continuity and load test
(b) Flash test and operation test
(c) Earth continuity and insulation resistance test
(d) Leakage test and operation test
4. A suitably rated fuse to be fitted in the supply cord to a 3kW electric kettle is one manufactured to:
(a) BS88Part2
(b) BS 1361
(c) BS 1362
(d) BS 3036
5. British Standard 6500 is the common Standard for::
(a) Flexible cords
(b) Fixed wiring in houses
(c) Steel wire armoured cables in industry
(d) Wiring in automobiles
6. The responsibility for ensuring electrical equipment is used safely is the duty of:
(a) an employer, employee and self-employed person
(b) an employee only
(c) a self-employed person only
(d) a 'domestic servant'
7. The responsibility for providing suitable electrical equipment for use at work is in:
(a) The Electricity at Work Regulations 1989
(0) Provision and Use of Work Equipment Regulations 1992
(c) British Standard 7671:1992
(d) Yellow Pages
8. The responsibility for maintaining electrical equipment in a safe condition is in Electricity at Work Regulation:
(a) 4(1)
(b) 4(2)
(c) 4(3)
(d) 4(4)
9. The Electricity at Work Regulations apply to:
(a) Industrial installations only
(b) Industrial and commercial installations only
(c) Domestic and industrial installations only
(d) All electrical installations in the United Kingdom
10. Class I electrical equipment:
(a) is only that which has exposed metalwork requiring earthing
(b) has a two core connecting lead
(c) has a three core connecting lead
(d) is all insulated
11. Class I electrical equipment requires in-service maintenance that includes:
(a) an earth continuity test
(b) a flash test
(c) a dielectric strength test
(d) a hi-pot test every 12 months
12. The full range of test currents recommended for earth continuity testing is:
(a) (4- 24)V
(b) (20 - 200)mA
(c) (20 - 500)mA
(d) 2OmA to 25A
13. Class I data processing equipment may need an earth continuity test current not exceeding:
(a) l00 mA
(b) 4A
(c) 14A
(d) 25A
14. An earth continuity test on an electric kettle should be performed with a current of:
(a) 25mA
(b) 25A
(c) 25kA
(d) 25MA
15. An earth continuity test is applicable to:
(a) Class I equipment
(b) Class II equipment
(c) Class III equipment
(c) Class 0 equipment
16. The UK standard core insulation colours for phase, neutral and protective conductors of power supply leads for electrical equipment are respectively:
(a) brown, blue and green/yellow
(b) blue, brown and green/yellow
(c) red, black and blue
(d) red, black and green
17. The test voltage to be applied to an item of Class I equipment for insulation resistance testing is recommended to be:
(a) 50Vac.
(b) 250V d.c.
(c) 500Vd.c.
(d) l000V ac.
18 Equipment which achieves protection against electric shock by inclusion of a connection to the protective earthing conductor in the fixed installations is classified as:
a Class I
b Class II
C Class III
d Class 0l.
19 For protection against electric shock, Class I equipment relies upon
a One layer of basic insulation
b basic insulation plus a sheath or covering
C basic insulation and means of connection to the protective earthing
conductor
d at least two layers of insulation.
20 A safety isolating transformer for Class III equipment must conform to
a BS3456
b BS3535
c BS4533
d BS5?58.
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