Current Electricity Quiz Set 1 in English Posted on June 10, 2020September 8, 2020 by Surendra 0% 4 Created by Surendra Current Electricity Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 25 The resistance of a conductor varies inversely as length resistivity temperature area of cross-section 2 / 25 For which of the following ‘ampere second’ could be the unit ? Power Reluctance Energy Charge 3 / 25 Which is the best conductor of electricity ? Silver Iron Copper Carbon 4 / 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 remain same heater will burn out increase decrease 5 / 25 Varistors are non-linear resistors resistors with zero temperature coefficient carbon resistors insulators 6 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Reactor Inductor Capacitor Resistor 7 / 25 With rise in temperature the resistance of pure metals first increases and then decreases remains constant increases decreases 8 / 25 With rise in temperature the resistance of semi-conductors decreases first increases and then decreases remains constant increases 9 / 25 Ohm’s law is not applicable to carbon resistors circuits with low current densities high voltage circuits vacuum tubes 10 / 25 Which one of the following does not have negative temperature co-efficient ? Rubber Aluminium Paper Mica 11 / 25 Resistance of a tungsten lamp as applied voltage increases none of the above remains same increases decreases 12 / 25 Two resistors are said to be connected in series when both carry the same value of current same current passes in turn through both sum of IR drops equals the applied e.m.f. total current equals the sum of branch currents 13 / 25 Insulating materials have the function of preventing a short circuit between conducting wires conducting very large currents storing very high currents preventing an open circuit between the voltage source and the load 14 / 25 Electric current passing through the circuit produces luminous effect chemical effect magnetic effect thermal effect 15 / 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 ? 64 Q 18 Q 36 Q 48 Q 16 / 25 A resistance having rating 10 ohms 10 W is likely to be a wire wound resistor carbon resistor metallic resistor variable resistor 17 / 25 If the efficiency of a machine is to be high what should be low ? kWh consumed Input power True component of power Losses 18 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Aluminum Carbon Brass Copper 19 / 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 length of heating element should be decreased none of the above 20 / 25 An electric filament bulb can be worked from D.C. supply only Battery supply only All above A.C. supply only 21 / 25 All of the following are equivalent to watt except amperes/volt joules/sec. amperes x volts (amperes) ohm 22 / 25 Resistance of a material always decreases if temperature of material is decreased none of the above is correct temperature of material is increased number of free electrons available become more 23 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to mutual collisions between conducting electrons the release of conduction electrons from parent atoms mutual collisions between metal atoms collisions between conduction electrons and atoms 24 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Voltage Current Resistance Power 25 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Currents are additive Power are additive Elements have individual currents Voltages are additive कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। Your score is LinkedIn Facebook Twitter 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
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