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PAT Testing Exam Revision

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1. User checks of stationary equipment installed in industrial premises should be conducted: Mark one answer
A Before use
B Daily
C Monthly
D Weekly
Correct Answer: D Weekly
2. During a formal visual inspection it should be confirmed that the equipment is being operated: Mark one answer
A At the correct voltage
B By a skilled person
C By an instructed person
D In accordance with manufacturer's instructions
Correct Answer: D In accordance with manufacturer's instructions
3. If a standard 13 A plug became overheated the most likely cause would be: Mark one answer
A A loose connection at one or more of the terminals
B Inadequate earthing connections
C Reversed polarity of the cable conductors
D The use of an incorrectly rated cartridge fuse
Correct Answer: A A loose connection at one or more of the terminals
4. When conducting insulation resistance tests on new household electrical appliances to BS 3456 Class I insulation, the minimum value would be: Mark one answer
A 0.5 megohm
B 1.0 megohm
C 2 megohm
D 7 megohm
Correct Answer: B 1.0 megohm
5. An ohmmeter used to measure the resistance of an earth continuity conductor, must be capable of producing a short-circuit current between: Mark one answer
A 2 and l0mA
B 20 and 200 mA
C 200 and 500 mA
D L0 and 20mA
Correct Answer: B 20 and 200 mA
6. An insulation resistance test of a Class I household portable appliance is to be carried out. using the earth leakage method. The maximum acceptable value is: Mark one answer
A 0.25mA
B 0.5 mA
C 0.75mA
D 1mA
Correct Answer: C 0.75mA
7. Equipment found to be faulty must not be used but must be: Mark one answer
A Labelled and reported
B Labelled and withdrawn from service
C Labelled, reported and withdrawn from service
D Reported and withdrawn from service
Correct Answer: C Labelled, reported and withdrawn from service
8. IT equipment which is not constructed to BS EN 60950 may be damaged by an applied voltage insulation resistance test. The test that should replace it is: Mark one answer
A A continuity test
B A dielectric strength test
C A polarity test
D An earth leakage test
Correct Answer: D An earth leakage test
9. Equipment with an earth leakage current designed to exceed 3.5 mA shall: Mark one answer
A Be permanently wired or supplied by a plug and socket to BS 4343 (BS EN 6030-2)
B Have a label permanently fixed indicating the value of leakage current
C Have internal protective conductors of not less than 0.5 mm² c.s.a
D Only be used in industrial situations
Correct Answer: A Be permanently wired or supplied by a plug and socket to BS 4343 (BS EN 6030-2)
10. In order to reduce the possibility of electric shock through contact with live parts, the aperture of any electrical equipment must Mark one answer
A Be located so as to be inaccessible to the user
B Be subjected to dielectric strength testing
C Comply with the requirements of BS EN 50950
D Meet test finger and test pin requirements
Correct Answer: D Meet test finger and test pin requirements
11. For protection against electric shock, Class III equipment relies upon a supply derived from a Mark one answer
A Functional extra-low voltage source
B Protective extra-low voltage source
C Safety-low voltage source
D Separated extra-low voltage source
Correct Answer: D Separated extra-low voltage source
12. Class II equipment may be constructed with Mark one answer
A Earthed metalwork separated from live parts by basic and supplementary insulation
B Earthed metalwork separated from live parts by basic insulation only
C Unearthed metalwork separated from live parts by basic and supplementary insulation
D Unearthed metalwork separated from live parts by basic insulation only
Correct Answer: C Unearthed metalwork separated from live parts by basic and supplementary insulation
13. Which one of the following types of equipment in shops and offices is considered the most likely to develop dangerous faults? Mark one answer
A Hand-held
B Movable
C Portable
D Stationary
Correct Answer: A Hand-held
14. When conducting a formal visual inspection on equipment used outdoor, it is important that the equipment has a suitable Mark one answer
A GP rating
B GS rating
C IP rating
D IT rating
Correct Answer: C IP rating
15. If an inspector considers that the equipment being tested is not suitable for the environment, this should be Mark one answer
A Recorded after the operative has been instructed as to the possible danger
B Recorded and brought to the attention of the responsible person
C Reported to the Health & Safety Executive
D Reported to the manufacturer of the equipment
Correct Answer: B Recorded and brought to the attention of the responsible person
16. Prior to applying insulation resistance tests to electrical equipment, the Mark one answer
A Fuses should be checked, switches in the OFF position and all covers removed if possible
B Fuses should be checked, switches in the ON position and covers in place
C Switches should be in the OFF position and all covers in place
D Switches should be in the ON position and all covers removed if possible
Correct Answer: B Fuses should be checked, switches in the ON position and covers in place
17. When conducting an earth continuity test on equipment that has accessible metal parts, which are earthed only for functional/screening purposes, these parts should be Mark one answer
A Subjected to a measured touch current test
B Tested at a circuit 1.5 times the fuse rating
C Tested at a current between 20 mA to 200mA
D Tested for earth continuity at full current
Correct Answer: C Tested at a current between 20 mA to 200mA
18. When using certain types of test instrument, as an alternative to subtracting the lead resistance from the final measured value, the lead resistance may be Mark one answer
A Decreased
B Ignored
C Increased
D Nulled
Correct Answer: D Nulled
19. When applying a test voltage to an item of Class I equipment, a value of 0.1 MO is obtained. One possible reason for this low reading could be Mark one answer
A A short circuit between live conductors within the appliance cord set
B An open circuit has occurred within the protective conductor
C Progressive failure of the insulation between live conductors
D Progressive failure of the insulation between live conductors and earth
Correct Answer: D Progressive failure of the insulation between live conductors and earth
20. Which voltage must be used when carrying out an insulation resistance test on a Class I toaster? Mark one answer
A 1000 V d.c
B 3750 a.c
C 500 V a.c
D 500 V d.c
Correct Answer: D 500 V d.c
21. An insulation resistance tester should be capable of: Mark one answer
A Delivering a maximum voltage of 25 A through the load
B Delivering a minimum voltage of 1000 V d.c. to the load
C Maintaining the test voltage required across the load
D Testing the continuity of an earthing circuit
Correct Answer: C Maintaining the test voltage required across the load
22. Where a user check reveals damage to equipment, it must be reported to: Mark one answer
A A manager of an inspection and test organization
B A responsible person
C The Health and Safety Inspectorate
D The equipment manufacturer
Correct Answer: B A responsible person
23. The manager of an inspection and test organisation should be able to: Mark one answer
A Demonstrate competence in the use of appliance testers
B Instruct untrained persons in the use of portable appliance testers
C Know their legal responsibilities under the Electricity at Work Regulations
D Repair faulty electrical equipment
Correct Answer: C Know their legal responsibilities under the Electricity at Work Regulations
24. Earth continuity testing may in certain circumstances be carried out by means of: Mark one answer
A A bell set and battery
B A low resistance ohmmeter
C An instrument complying with BS EN 60309
D An insulation resistance tester
Correct Answer: B A low resistance ohmmeter
25. Test leads and probes used to measure voltages over 50 V a.c. and 100 V d.c. should comply with: Mark one answer
A BS 5490 Specification for classification of Protection
B BS 7671
C Health & Safety Executive Guidance Note GS38
D IEC Publication 479
Correct Answer: C Health & Safety Executive Guidance Note GS38
26. Where protection against electric shock from equipment is provided using a protective conductor in the fixed wiring, the equipment classification would be: Mark one answer
A Class 0
B Class I
C Class II
D Class III
Correct Answer: B Class I
27. A substantially continuous metal enclosure associated with Class II equipment would be classified as: Mark one answer
A Insulation encased
B Isolation encased
C Metal insulated
D Metal-cased
Correct Answer: D Metal-cased
28. There is no provision for protective earthing or reliance upon installation conditions for which one of the following equipment? Mark one answer
A Class 01
B Class I
C Class II
D Class III
Correct Answer: C Class II
29. Which voltage should be applied when conducting an insulation resistance test on an electrical appliance? Mark one answer
A 230 V a.c
B 230 V d.c
C 500 V a.c.
D 500 V d.c
Correct Answer: D 500 V d.c
30. During the inspection and testing process, which of the following is not required: Mark one answer
A Earth continuity test on Class II equipment
B Earth continuity tests (for Class I equipment)
C Insulation testing
D Preliminary inspection
Correct Answer: A Earth continuity test on Class II equipment
31. Details of which of the following must be recorded when carrying out a safety check on an electrical appliance: Mark one answer
A Applicable British Standards
B Combined inspection and test
C Manufacturer's name and address
D User check revealing no damage to equipment
Correct Answer: B Combined inspection and test
32. Which one of the following will not affect the frequency of inspection and testing for an electrical appliance: Mark one answer
A Environment in which it is to be used
B The equipment class
C The integrity of the fixed electrical installation
D The user
Correct Answer: C The integrity of the fixed electrical installation
33. The suggested frequency for user checks for children's rides in a fairground is: Mark one answer
A 12 months
B Daily
C Monthly
D Weekly
Correct Answer: B Daily
34. Which one of the following tests should not be applied routinely to equipment: Mark one answer
A Dielectric strength
B Earth continuity
C Insulation resistance
D Polarity
Correct Answer: A Dielectric strength
35. The first electrical test to be applied to Class I equipment is: Mark one answer
A Dielectric strength
B Earth continuity
C Insulation resistance
D Polarity
Correct Answer: A Dielectric strength
36. Which one of the following items of information is not required on an inspection and test label? Mark one answer
A An indication of whether the equipment has passed or failed the safety tests
B Appliance or equipment number
C Date at time of testing
D Details of previous test results
Correct Answer: D Details of previous test results
37. Which one of the following is not required to be tested within the scope of the IEE Code of Practice? Mark one answer
A Electrical tools
B Fixed equipment
C Fixed installations
D Portable appliances
Correct Answer: C Fixed installations
38. The Memorandum of Guidance on the Electricity at Work Regulations 1989 advises that equipment records: Mark one answer
A Are not required if the equipment is fed from a 110 V safety supply
B Are not required where the equipment is used in low-risk areas
C Only be. kept where the equipment is used in high-risk areas
D Should be kept throughout the working life of the equipment
Correct Answer: D Should be kept throughout the working life of the equipment
39. The person responsible for carrying out an inspection and test on an appliance should have made available to them: Mark one answer
A A copy of the Electricity at Work Regulations
B A copy of the Health and Safety at Work Act
C A list of all. the users of equipment
D Previous inspection and test results
Correct Answer: D Previous inspection and test results
40. Which one of the following is a statutory document? Mark one answer
A A British Standard
B Electricity at Work Regulations
C IEE Wiring Regulations
D LEE Codes of Practice
Correct Answer: B Electricity at Work Regulations
41. Which one of the following regulations states: 'Every employer shall make a suitable and sufficient assessment of the risk to the health and safety of his employees and to persons not in his employment'? Mark one answer
A The Electricity Supply Regulations
B The Electricity at Work Regulations
C The Management of Health and Safety at Work Regulations
D The Provision and Use of Work Equipment Regulations
Correct Answer: C The Management of Health and Safety at Work Regulations
42. Certain sections of The Health and Safety at Work Regulations put a duty of care upon: Mark one answer
A Both employees and the general public
B Both employers and employees
C Employees only
D Employers only
Correct Answer: B Both employers and employees
43. Which one of the following regulations state: 'As may be necessary to prevent danger, all systems shall be maintained so as to prevent, so far as is reasonably practicable, such danger'? Mark one answer
A The Electricity at Work Regulations
B The IEE Wiring Regulations
C The Management of Health and Safety at Work Regulations
D The Provision and Use of Work Equipment Regulations
Correct Answer: A The Electricity at Work Regulations
44. The scope of legislation of inspection and testing of electrical equipment extends to distribution systems up to: Mark one answer
A 11kV
B 230V
C 400V
D 400kV
Correct Answer: D 400kV
45. The Code of Practice for In-service Inspection and Testing of Electrical Equipment does not apply to: Mark one answer
A Caravan sites
B Offices
C Petrol station forecourts
D Shops
Correct Answer: C Petrol station forecourts
46. The safety and proper functioning of certain portable appliances and equipment depends on the integrity of the fixed installation. Requirements for the inspecting and testing of fixed installations are given in: Mark one answer
A BS2754
B BS7671
C BSEN60898
D BSEN60947
Correct Answer: B BS7671
47. An electric kettle is classified as a: Mark one answer
A Equipment for 'building in'
B Hand-held appliance
C Moveable equipment
D Portable appliance
Correct Answer: D Portable appliance
48. Which one-of the following domestic electrical appliances may be regarded as an item of stationary equipment? Mark one answer
A A bathroom heater
B A built-in electric cooker
C A visual display unit
D A washing machine
Correct Answer: D A washing machine
49. A portable appliance that is supplied by a flexible cord incorporating a protective conductor, is classified as: Mark one answer
A Class I
B Class III
C Double insulated
D Metal clad Class II
Correct Answer: A Class I
50. Which one of the following arrangements would not meet the requirements of the lEE Code of Practice? Mark one answer
A Class I equipment supplied by a 1.5 mm² three-core extension lead connected into a 13 A three-pin socket outlet
B Class I equipment supplied by a 2.5 mm² three-core extension lead connected into a BS EN 60309-2 socket outlet
C Class II equipment supplied by a 1.5 mm² two-core extension lead connected into a 13 A three-pin socket outlet
D Class III equipment supplied by a two-core flexible cord connected into the secondary of an isolating transformer supplying SELV lighting equipment
Correct Answer: C Class II equipment supplied by a 1.5 mm² two-core extension lead connected into a 13 A three-pin socket outlet