Electrical Jointing Methods Quiz

What is the purpose of a termination in electrical jointing?

• To increase the mechanical strength of the joint

• To create a continuous path for electric current

• To prepare the end of a conductor for connection

• To reduce the contact area between current carrying surfaces

Which jointing method involves the use of molten metal to link two surfaces?

• Bolting

• Clamping

• Wielding

• Soldering

What is the disadvantage of using soldering for jointing copper surfaces?

• It requires high temperature to melt the metal

• It is difficult to make and unmake the connection

• It weakens the mechanical strength of the joint

• It creates an inseparable contact

Which jointing method involves drilling or punching holes in the material?

• Bolting

• Riveting

• Soldering

• Clamping

What is the purpose of crimping in mechanical jointing?

• To create inseparable contact

• To make the joint cooler in operation

• To reduce the effective area of the material

• To join conductors using a hydraulically operating machine

What type of joint is used when the wires are not in any tensile stress and the joint has to be as small as possible?

• Straight Twist Joint

• Bell Hanger’s Joint

• Scarfe Joint

• Britannia Joint

What is the method for making a Britannia Joint?

• Tin the ends and bend 6mm of each end over at a right angle

• Lay the conductors together and solder the joint

• Twist the conductors tightly together in opposite directions

• Chamfer the ends and bind the joint with tinned binding wire

When is a Bell Hanger’s Joint used?

• When the joint has to be as small as possible

• When the wires are under tension

• When the conductors are stranded

• When no tensile stress is placed on the conductors

What is the disadvantage of using riveting for jointing?

• It is not suitable for busbars

• It creates inseparable contact

• It reduces the effective area of the material

• It is difficult to make and unmake the connection

What type of connectors are used for joining flexible cords for connection to an appliance?

• Mechanical connectors

• Porcelain connectors

• Multi-way brass terminals

• Accessory connectors