Related Questions

The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as
A Matthiessen’s rule
B Debye rule
C Curie rule
D Onne’s rule
In AC.S.R. Conductors, the insulation between aluminium and steel conductors is
A Insulin
B Bitumen
C Varnish
D No insulation is required
Which of the following factors affect resistivity of metals ?
A Age hardening
B Alloying
C Temperature
D Cold work
E All of the above
Which of the following has the lowest electrical resistivity?
A Graphite
B Fireclay
C Alumina
D Zircon
Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity).
A Fireclay
B Carborundum
C Graphite
D Chromite
Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
A 10-3
B 103
C 10-15
D 1015
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.
A No change
B Decrease
C Increase
D Exponential decrease
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:
A rotor
B armature
C battery
D commutator
E None of the above
To insure that everyone understands what the electrical symbols represent it is customary to include a ________ on the electrical sheet.
A List
B Part number
C Electrical legend
D Electrical layer
What table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs?
A Function table
B Truth table
C Routing table
D ASCII table
E None of the above

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