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