[{"id":212125,"question":"A preset or trimmer can be a.","choices":[{"text":"Variable resistor","value":"A"},{"text":"Variable capacitor","value":"B"},{"text":"Variable inductor","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212124,"question":"A resistor whose resistance decreases with increasing intensity is.","choices":[{"text":"Light dependent resistor","value":"A"},{"text":"Thermistor","value":"B"},{"text":"Thermocouple","value":"C"},{"text":"Strain gauge","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212123,"question":"What type of current is produced by batteries.","choices":[{"text":"Direct current","value":"A"},{"text":"Alternating current","value":"B"},{"text":"Pulsating current","value":"C"},{"text":"Convection current","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212122,"question":"A device used to measure the strain of an object and it is a type of resistor that changes value with applied strain is a","choices":[{"text":"thermistor","value":"A"},{"text":"Strain gauge","value":"B"},{"text":"Thermocouple","value":"C"},{"text":"Potentiometer","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212121,"question":"A device consisting two different conductors that produce a voltage proportional to the temperature difference between either end of the pair of conductors is a.","choices":[{"text":"Thermistor","value":"A"},{"text":"Thermocouple","value":"B"},{"text":"Strain gauge","value":"C"},{"text":"Potentiometer","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212120,"question":"A type of resistor whose resistance varies significantly with temperature is.","choices":[{"text":"Thermistor","value":"A"},{"text":"Thermocouple","value":"B"},{"text":"Strain gauge","value":"C"},{"text":"Potentiometer","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212119,"question":"Generally, electrical resistivity of intrinsic semiconductors decreases with increasing.","choices":[{"text":"Pressure","value":"A"},{"text":"Volume","value":"B"},{"text":"Temperature","value":"C"},{"text":"Density","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212118,"question":"For D.C. circuit the resistance can be taken as impedance with zero.","choices":[{"text":"Volt","value":"A"},{"text":"Ampere","value":"B"},{"text":"Phase angle","value":"C"},{"text":"Watts","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212117,"question":"The magnetic force is simply a","choices":[{"text":"Reflecting force","value":"A"},{"text":"Deflecting force","value":"B"},{"text":"Restoring force","value":"C"},{"text":"Gravitational force","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212116,"question":"The sensitivity of the galvanometer can be increased by increasing the","choices":[{"text":"Number of turns of the coil","value":"A"},{"text":"Area of the coil","value":"B"},{"text":"Strength of the magnetic field","value":"C"},{"text":"All of the 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silver","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212102,"question":"Which physical law expresses the relationship between the heat generated and the current through a conductor.","choices":[{"text":"Ohm's law","value":"A"},{"text":"Kirchoff's law","value":"B"},{"text":"Joule's law","value":"C"},{"text":"Ampere's law","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212101,"question":"Which two terminal passive electronic component implements electrical resistance as a circuit element.","choices":[{"text":"Capacitor","value":"A"},{"text":"Inductor","value":"B"},{"text":"Resistor","value":"C"},{"text":"Transformer","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212100,"question":"What units are used to rate electrical fuses.","choices":[{"text":"Volts","value":"A"},{"text":"Ampere","value":"B"},{"text":"Watts","value":"C"},{"text":"Hertz","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212099,"question":"The Step up transformer","choices":[{"text":"Increase the input current","value":"A"},{"text":"Increases the input voltage","value":"B"},{"text":"Has more turns in the primary coil","value":"C"},{"text":"Has less time in the secondary coil","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212098,"question":"The direction of induced e.m.f in a circuit is in accordance with conservation of.","choices":[{"text":"Mass","value":"A"},{"text":"Charge","value":"B"},{"text":"Momentum","value":"C"},{"text":"Energy","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212097,"question":"Which part of D.C motor reverses the direction of current through the coil every half cycle.","choices":[{"text":"The armature","value":"A"},{"text":"The commutator","value":"B"},{"text":"the brushes","value":"C"},{"text":"The slips rings","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212096,"question":"A D.C Motor converts","choices":[{"text":"Mechanical energy into electrical energy","value":"A"},{"text":"Mechanical energy into chemical energy","value":"B"},{"text":"Electrical energy into mechanical energy","value":"C"},{"text":"Electrical energy into chemical energy","value":"D"},{"value":"E"}],"correctAnswer":3}]