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These are called","choices":[{"text":"Energy band","value":"A"},{"text":"Energy states","value":"B"},{"text":"Forbidden energy gap","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":33859,"question":"When an atom is surrounded by large number of atoms their the energy levels are","choices":[{"text":"Distinct","value":"A"},{"text":"Very close","value":"B"},{"text":"Energy band","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":33858,"question":"When an atom is isolated, it energy levels are","choices":[{"text":"Distinct","value":"A"},{"text":"Very close","value":"B"},{"text":"Very very close","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":33856,"question":"The theory which explains the vast diversity in an electrical behaviour of all types the materials is","choices":[{"text":"Free electron theory","value":"A"},{"text":"Band theory","value":"B"},{"text":"Theory based as chemical properties","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":33855,"question":"Semiconductor materials have the conductivities generally lies between","choices":[{"text":"10<sup>-5</sup> to 10<sup>-6</sup> (Ωm)<sup>-1</sup>","value":"A"},{"text":"10<sup>-6</sup> to 10<sup>-4</sup> (Ωm)<sup>-1</sup>","value":"B"},{"text":"10<sup>-7</sup> to 10<sup>-3</sup> (Ωm)<sup>-1</sup>","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":33853,"question":"The example of insulators are","choices":[{"text":"Copper","value":"A"},{"text":"Nickel","value":"B"},{"text":"Diamond","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":33852,"question":"The insulators have conductivities ties in the range","choices":[{"text":"10<sup>-10</sup> to 10<sup>-20</sup> (Ωm)<sup>-1</sup>","value":"A"},{"text":"10<sup>-5</sup> to 10<sup>-20</sup> (Ωm)<sup>-1</sup>","value":"B"},{"text":"10<sup>-15</sup> to 10<sup>-25</sup> (Ωm)<sup>-1</sup>","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":33850,"question":"The conductivities of conductors (metals) have","choices":[{"text":"10<sup>5</sup> (Ω)<sup>-1</sup>","value":"A"},{"text":"10<sup>7</sup> (Ωm)<sup>-1</sup>","value":"B"},{"text":"10<sup>8</sup> (Ωm)<sup>-1</sup>","value":"C"},{"text":"10<sup>9</sup> (Ωm)<sup>-1</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":33847,"question":"A steel wire 12 mm in diameter is fastened to a log and them pulled by a tractor. The length of stire between the log and tractor is 11 m. The force of 10,000 N is required to pull the log. What is stress","choices":[{"text":"84.46 MPa","value":"A"},{"text":"85.46 MPa","value":"B"},{"text":"88.46 MPa","value":"C"},{"text":"89.46 MPa","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":33844,"question":"The work done by stretching force is the area of","choices":[{"text":"Trapezium","value":"A"},{"text":"Triangle","value":"B"},{"text":"Rectangle","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":33843,"question":"In deformation of the material, the potential energy of the molecules due to displacement from their mean positions is","choices":[{"text":"Lost","value":"A"},{"text":"Gained","value":"B"},{"text":"No lost no gain","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":33842,"question":"Examples of brittle substances are","choices":[{"text":"Glass","value":"A"},{"text":"Copper","value":"B"},{"text":"Lead","value":"C"},{"text":"None of 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property of a substance in which a material undergoes the deformation as","choices":[{"text":"Elastic deformation","value":"A"},{"text":"Plastic deformation","value":"B"},{"text":"Shear deformation","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":33835,"question":"The ultimate tensile strength of the material can be regarded as","choices":[{"text":"Maximum strength","value":"A"},{"text":"Nominal strength&nbsp;","value":"B"},{"text":"No strength","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":33833,"question":"The ultimate tensile strength is","choices":[{"text":"Greatest stress, a material can endure","value":"A"},{"text":"Stress is increased beyond the yield strength","value":"B"},{"text":"Maximum stress, a material can with stand","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":33831,"question":"The region of plasticity 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modulus for lead is","choices":[{"text":"1.7","value":"A"},{"text":"4.9","value":"B"},{"text":"5.6","value":"C"},{"text":"6.2","value":"D"},{"value":"E"}],"correctAnswer":3}]