B
busby1991
1.A portable appliance that is supplied by a flexible cord incorporated a protective conductor is classified as.
a. class 1
b. double insulation
c metal clad class 11
d. class 111
2. earth continuity testing may in certain circumstances be carried out by means of
a. low resistance ohmmeter
b an insulation resistance tester
c a bell set and battery
d an instrument complying with bs en 60309
3.A substantially continuos metal enclosure associated with class 11 equipment would be classified as
a. insualtion encased
b. isolation encased
c. metal cased
d. metal insulation
4.There is no provision for protecting earthing or reliance upon installation conditions for which one of the following equipment?
a. class 1
b class 11
c. class 111
d. class01
5. user checks of stationary equipment installed in industrial premises should be conducted
a before use
b daily
c weekly
d monthly
6.during a formal visual inspection if should be confirmed that the equipment is being operated
a. at the correct voltage
b. by a skilled person
c. by an instructed person
d. in accordance with manufacturers instruction
7.If a standard 13a plug became overheated the most likely cause would be:
a. a loose connection at one or more of the terminals
b. reversed polarity of the cable conductors
c. inadequated earthing connections
d. the use of an incorrectly rated cartridge fuses
8. an insulation resistance test of a class 1 household portable appliance is to be carried out using the earth leakage metho. the maximum acceptable vaslue is:a. 0.25ma
b. 0.5 ma
c. 0.75ma
d. 1ma
9.Which of the following types of equipment in shops and offices is considered the most likely to develop dangerous faults?
a. movable
b. stationary
c. portable
d. hand-held
10.one person of carrying out an earth continuity test, using low voltage current ohmmeter, on equipment which relies on functional earthing is to ensure that the:
a. touch current measurememnts are satisfactory
b. equipment conforms to the requirements of bs 7822
c. earthing allows the equipment to operate correctly
d. means of isolation form the supply are accessible
11. when conduting an earth continuity test on equipment that has accessible metal parts, which are eathed only for functinal/screening purposes, these parts should be
a tested at a current 1.5 times the fuse rating
b. subjected to a measurement touch currwnt test
c. tested at a current between 20ma to 200ma
d tested and earthed continuity at a full current
13. portable appliances testers may, in some cases, be used for earth continuity testing using a low value of test current, typically:
a.50ma slow test
b.50ma soft test
c.100ma slow test
d.100ma soft test
a. class 1
b. double insulation
c metal clad class 11
d. class 111
2. earth continuity testing may in certain circumstances be carried out by means of
a. low resistance ohmmeter
b an insulation resistance tester
c a bell set and battery
d an instrument complying with bs en 60309
3.A substantially continuos metal enclosure associated with class 11 equipment would be classified as
a. insualtion encased
b. isolation encased
c. metal cased
d. metal insulation
4.There is no provision for protecting earthing or reliance upon installation conditions for which one of the following equipment?
a. class 1
b class 11
c. class 111
d. class01
5. user checks of stationary equipment installed in industrial premises should be conducted
a before use
b daily
c weekly
d monthly
6.during a formal visual inspection if should be confirmed that the equipment is being operated
a. at the correct voltage
b. by a skilled person
c. by an instructed person
d. in accordance with manufacturers instruction
7.If a standard 13a plug became overheated the most likely cause would be:
a. a loose connection at one or more of the terminals
b. reversed polarity of the cable conductors
c. inadequated earthing connections
d. the use of an incorrectly rated cartridge fuses
8. an insulation resistance test of a class 1 household portable appliance is to be carried out using the earth leakage metho. the maximum acceptable vaslue is:a. 0.25ma
b. 0.5 ma
c. 0.75ma
d. 1ma
9.Which of the following types of equipment in shops and offices is considered the most likely to develop dangerous faults?
a. movable
b. stationary
c. portable
d. hand-held
10.one person of carrying out an earth continuity test, using low voltage current ohmmeter, on equipment which relies on functional earthing is to ensure that the:
a. touch current measurememnts are satisfactory
b. equipment conforms to the requirements of bs 7822
c. earthing allows the equipment to operate correctly
d. means of isolation form the supply are accessible
11. when conduting an earth continuity test on equipment that has accessible metal parts, which are eathed only for functinal/screening purposes, these parts should be
a tested at a current 1.5 times the fuse rating
b. subjected to a measurement touch currwnt test
c. tested at a current between 20ma to 200ma
d tested and earthed continuity at a full current
13. portable appliances testers may, in some cases, be used for earth continuity testing using a low value of test current, typically:
a.50ma slow test
b.50ma soft test
c.100ma slow test
d.100ma soft test
