Multiple Choice Question/ Objective question Electrical Material Part -1 for Competition Exam

Q.1 Materials which can store electrical energy are called
      (a) Magnetic materials
      (b) Semi conductors
      (c) Dielectric materials
      (d) Super conductors
Ans (c)

Q.2 ACSR (Aluminium Conductor Steel Reinforced) are used as
      (a)  Over head transmission lines. 
      (b)  Super conductors
      (c)  Fuse 
      (d) Underground cables
Ans (a)

 Q.3.Brass is an alloy of
      (a)  Copper and Zinc.
      (b)  Copper and Iron
      (c)  Copper and Aluminium
      (d)  Copper and Tin
Ans (a)

 Q.4.Property of material which allows it to be drawn out into wires
      (a)  Ductility
      (b)  Solder ability
      (c)  Super conductivity
      (d)   Malleability.
Ans (a)

 Q.5.The covers of electrical machines are made of
      (a)  Soft magnetic materials
      (b)  Hard magnetic materials
      (c)  Super conductor
      (d)  Semiconductor.
Ans (a)

 Q.6.Atomic weight of an atom is
      (a)  Sum of the number of protons and neutrons
      (b)  Sum of the number of protons and electrons
      (c)  Sum of the number of protons
      (d)  Sum of the number of electrons and neutrons
Ans (a)

 Q.7.Gold and silver are
      (a) Dielectric materials
      (b) Low resistivity conducting materials
      (c)  Magnetic materials
      (d)  Semiconductors.
Ans (b)

 Q.8.Phenol and Formaldehyde are polymerized to a resultant product known as
      (a) PVC
      (b) Bakelite
      (c) Polyester
      (d)  Teflon
Ans (b)

 Q.9.. Large scale integration chips have between
      (a) Less than 10 components
      (b) 10 and 100 components
      (c) 100 and 1000 components
      (d)  More than 1000 components
Ans (c)

 Q.10. The material with lowest resistivity is
      (a) Constantan.
      (b) Silver
      (c) Manganin. 
      (d) Nichrome
Ans (b)

 Q.11. The property due to which the resistance of some metal or compound vanishes under certain condition
      (a) Semi conductivity
      (b) Super conductivity
      (c)  Curie point 
      (d) Magnetostriction
Ans (b)

 Q.12. Bronze is an alloy of
      (a) Copper
      (b) Gold
      (c)  Silver
      (d) Carbon
Ans (a)

 Q.13.Ceramic are good
      (a)  Insulators
      (b)  Conductors.
      (c)  Superconductors.
      (d)  Semiconductors
Ans (a)

 Q.14.The critical temperature above which the ferromagnetic materials loose their magnetic properties is known as
      (a)  Hysterisis
      (b)  Curie point
      (c)  Transition temperature
      (d)  Standard temperature
Ans (b)

Q.15.Permanent magnets are made of
      (a)  Soft magnetic materials
      (b)  Hard magnetic material
      (c)  Semi conductor 
      (d)  Super conductors
Ans (b)
Location: Bilaspur, Chhattisgarh 495001, India

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