By Surendra | June 10, 2020 0 Comment 0% 7 Created by Surendra Current Electricity Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 25 A resistance having rating 10 ohms 10 W is likely to be a wire wound resistor variable resistor carbon resistor metallic resistor 2 / 25 With rise in temperature the resistance of semi-conductors increases first increases and then decreases decreases remains constant 3 / 25 Which one of the following does not have negative temperature co-efficient ? Paper Mica Rubber Aluminium 4 / 25 For which of the following ‘ampere second’ could be the unit ? Charge Reluctance Energy Power 5 / 25 Which is the best conductor of electricity ? Iron Silver Copper Carbon 6 / 25 The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms what is the resistance of the other ? 48 Q 36 Q 64 Q 18 Q 7 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Brass Aluminum Carbon Copper 8 / 25 Resistance of a tungsten lamp as applied voltage increases increases none of the above remains same decreases 9 / 25 The resistance of a conductor varies inversely as area of cross-section resistivity temperature length 10 / 25 An electric filament bulb can be worked from A.C. supply only D.C. supply only Battery supply only All above 11 / 25 Electric current passing through the circuit produces magnetic effect luminous effect thermal effect chemical effect 12 / 25 In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes using same supply mains length of heating element should be increased length of heating element has no effect on heating if water none of the above length of heating element should be decreased 13 / 25 All of the following are equivalent to watt except (amperes) ohm joules/sec. amperes/volt amperes x volts 14 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Resistor Capacitor Inductor Reactor 15 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Voltage Power Current Resistance 16 / 25 Two resistors are said to be connected in series when total current equals the sum of branch currents both carry the same value of current same current passes in turn through both sum of IR drops equals the applied e.m.f. 17 / 25 If the efficiency of a machine is to be high what should be low ? Losses Input power True component of power kWh consumed 18 / 25 With rise in temperature the resistance of pure metals first increases and then decreases decreases remains constant increases 19 / 25 A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb the heater output will decrease increase heater will burn out remain same 20 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Power are additive Currents are additive Elements have individual currents Voltages are additive 21 / 25 Resistance of a material always decreases if none of the above is correct temperature of material is decreased temperature of material is increased number of free electrons available become more 22 / 25 Insulating materials have the function of preventing an open circuit between the voltage source and the load preventing a short circuit between conducting wires storing very high currents conducting very large currents 23 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to the release of conduction electrons from parent atoms collisions between conduction electrons and atoms mutual collisions between conducting electrons mutual collisions between metal atoms 24 / 25 Varistors are resistors with zero temperature coefficient non-linear resistors insulators carbon resistors 25 / 25 Ohm’s law is not applicable to circuits with low current densities vacuum tubes high voltage circuits carbon resistors कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। NameEmailPhone NumberDistrictSchool/Coaching Name Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
