[{"id":212065,"question":"Charge carriers in thermocouples are.","choices":[{"text":"Anions","value":"A"},{"text":"Cations","value":"B"},{"text":"Electrons","value":"C"},{"text":"Protons","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212064,"question":"Which of the following parameters is irrelevant for a fuse wire.","choices":[{"text":"Its radius","value":"A"},{"text":"Current flowing through it.","value":"B"},{"text":"Its specific resistance","value":"C"},{"text":"Its length","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212063,"question":"A 800 W toaster and a 1.3 kW frying pan are plugged into the same 120 V lines, then","choices":[{"text":"Fuse will not blow","value":"A"},{"text":"Fuse will blow","value":"B"},{"text":"Supply will spark","value":"C"},{"text":"Only toaster can work","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212062,"question":"The steady current which produces the same heating effect in a resistance in a given time as the alternating current does in the same resistance in the same time is called.","choices":[{"text":"Induced current","value":"A"},{"text":"Root mean square value of an alternating current","value":"B"},{"text":"Mean value of alternating current","value":"C"},{"text":"Electromotive force","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212061,"question":"Thermocouple is combination of.","choices":[{"text":"Thermocouples","value":"A"},{"text":"Capacitors in parallel","value":"B"},{"text":"Resistors in series","value":"C"},{"text":"Ammeter and voltmeter","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212060,"question":"When the battery is being charged its terminal potential difference than its emf is.","choices":[{"text":"Less","value":"A"},{"text":"Greater","value":"B"},{"text":"Double","value":"C"},{"text":"Squared root","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212059,"question":"When a direct current is passed though a junction formed of two dissimilar metals the junction becomes warmer or cooler depending on the.","choices":[{"text":"Current direction","value":"A"},{"text":"Thermocouple used","value":"B"},{"text":"Temperature gradient","value":"C"},{"text":"Amount of current","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212058,"question":"The amount of heat developed in a resistor is directly proportional to.","choices":[{"text":"The square of the current only","value":"A"},{"text":"The resistance of the conductor only","value":"B"},{"text":"The time of current passing only","value":"C"},{"text":"The square of current resistance and teh time of current flow","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212057,"question":"When ever current is drawn from a cell Its terminal potential difference and emf become","choices":[{"text":"Different","value":"A"},{"text":"Same","value":"B"},{"text":"Zero","value":"C"},{"text":"Negative","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212056,"question":"A heat sensitive resistor is called.","choices":[{"text":"Thermistor","value":"A"},{"text":"Varibale resistor","value":"B"},{"text":"Fixed resistor","value":"C"},{"text":"Zero resistor","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212055,"question":"A bulb of 100 W is connected to a 160 V supply What will be the power consumed.","choices":[{"text":"25 W","value":"A"},{"text":"30 W","value":"B"},{"text":"50 W","value":"C"},{"text":"64 W","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212054,"question":"A heart coil is out into two equal parts and only one part is now used in the heater The heat generated will be.","choices":[{"text":"Halved","value":"A"},{"text":"One fourth","value":"B"},{"text":"Doubled","value":"C"},{"text":"4 times","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212053,"question":"Which of the following are sources of direct current.","choices":[{"text":"Batteries","value":"A"},{"text":"Solare cells","value":"B"},{"text":"Thermocouples","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212052,"question":"Ohm's law is applicable to","choices":[{"text":"Ohmic and non ohmic devices only","value":"A"},{"text":"Semiconductors only","value":"B"},{"text":"Metals only","value":"C"},{"text":"Insulators only","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212051,"question":"The internal resistance of a primary cell depends upon the.","choices":[{"text":"Current dawn form the cell","value":"A"},{"text":"Concentration of the solution","value":"B"},{"text":"distance between cell electrodes","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212050,"question":"An ammeter can be converted into a voltmeter by connecting a","choices":[{"text":"Low resistance i series","value":"A"},{"text":"High resistance in series","value":"B"},{"text":"High resistance in parallel","value":"C"},{"text":"Low resistance in parallel","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212049,"question":"The free electron theory explains conduction in","choices":[{"text":"Insulators only","value":"A"},{"text":"Metals only","value":"B"},{"text":"Semi conductor only","value":"C"},{"text":"Non metals only","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212048,"question":"Which one of the following represents an ohm.","choices":[{"text":"Volt per ampere","value":"A"},{"text":"Joule per second","value":"B"},{"text":"Watt per ampere","value":"C"},{"text":"Joule per coulomb","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212047,"question":"Thermocouple is used for","choices":[{"text":"Converting atomic energy into heat energy","value":"A"},{"text":"Measure the radiant energy","value":"B"},{"text":"Storing the heat energy","value":"C"},{"text":"Measuring current","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":212046,"question":"Resistance and resistivity of a substance","choices":[{"text":"Increase with rise in temperature","value":"A"},{"text":"Decrease with rise in temperature","value":"B"},{"text":"Remains same at every temperature","value":"C"},{"text":"Increases at high voltage","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212045,"question":"The resistance offered by one cubic meter of a substance is known as.","choices":[{"text":"Reactance","value":"A"},{"text":"Conductance","value":"B"},{"text":"Conductivity","value":"C"},{"text":"Resistivity","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212044,"question":"Electrical energy is transmitted at high alternating voltages which of the following is not a valid reason for doing this.","choices":[{"text":"At high voltage a.c is safer than d.c.","value":"A"},{"text":"For a given powers, there is lower current with higher voltage.","value":"B"},{"text":"There is a smaller energy loss at high voltage and lower current","value":"C"},{"text":"The transmission lines can be thinner with a lower current.","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212043,"question":"Why an ammeter is always connected in series in a circuit.","choices":[{"text":"Its resistance is very high","value":"A"},{"text":"Its resistance is very low","value":"B"},{"text":"its resistance is infinity","value":"C"},{"text":"It does not draw current from the circuit","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":212042,"question":"A resistor connected to a battery is heated due to current passing through it. Which of the following quantity does not change.","choices":[{"text":"Resistivity","value":"A"},{"text":"Resistance","value":"B"},{"text":"Number of free electrons","value":"C"},{"text":"Drift velocity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212041,"question":"What is the effect on the product of resistivity and conductivity if the temperature of a conductor is increased.","choices":[{"text":"It decreases","value":"A"},{"text":"It increases","value":"B"},{"text":"It remains the same","value":"C"},{"text":"It may increase or decrease","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212040,"question":"Conductance is the reciprocal of","choices":[{"text":"Inductance","value":"A"},{"text":"Capacitance","value":"B"},{"text":"Resistance","value":"C"},{"text":"Admittance","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212039,"question":"In open circuit electromotive force equal to","choices":[{"text":"Current","value":"A"},{"text":"Resistance","value":"B"},{"text":"Voltage","value":"C"},{"text":"Inductence","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212038,"question":"An ideal voltage source has zero.","choices":[{"text":"Current","value":"A"},{"text":"Electromotive force","value":"B"},{"text":"Voltage","value":"C"},{"text":"Internal resistance","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":212037,"question":"The conductivity of a conductor is independent of the","choices":[{"text":"Electric charge","value":"A"},{"text":"Electric potential","value":"B"},{"text":"Electric field","value":"C"},{"text":"Internal resistance","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":212036,"question":"Current per unit area is called.","choices":[{"text":"Electric potential","value":"A"},{"text":"Current density","value":"B"},{"text":"Charge density","value":"C"},{"text":"Electric intensity","value":"D"},{"value":"E"}],"correctAnswer":2}]