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 Which of the following statement is true both for a series and a parallel D.C. circuit? Elements have individual currents Currents are additive Power are additive Voltages are additive 2 / 25 An electric filament bulb can be worked from D.C. supply only A.C. supply only All above Battery supply only 3 / 25 For which of the following ‘ampere second’ could be the unit ? Power Reluctance Charge Energy 4 / 25 All of the following are equivalent to watt except amperes x volts amperes/volt (amperes) ohm joules/sec. 5 / 25 Insulating materials have the function of storing very high currents preventing a short circuit between conducting wires preventing an open circuit between the voltage source and the load conducting very large currents 6 / 25 Which one of the following does not have negative temperature co-efficient ? Aluminium Paper Rubber Mica 7 / 25 Which is the best conductor of electricity ? Silver Carbon Iron Copper 8 / 25 Ohm’s law is not applicable to vacuum tubes high voltage circuits carbon resistors circuits with low current densities 9 / 25 Electric current passing through the circuit produces magnetic effect luminous effect chemical effect thermal effect 10 / 25 With rise in temperature the resistance of semi-conductors remains constant increases decreases first increases and then decreases 11 / 25 With rise in temperature the resistance of pure metals first increases and then decreases decreases increases remains constant 12 / 25 Varistors are non-linear resistors carbon resistors insulators resistors with zero temperature coefficient 13 / 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 decrease heater will burn out increase 14 / 25 The resistance of a conductor varies inversely as area of cross-section temperature length resistivity 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 ? 36 Q 48 Q 18 Q 64 Q 16 / 25 A resistance having rating 10 ohms 10 W is likely to be a variable resistor metallic resistor wire wound resistor carbon resistor 17 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Reactor Capacitor Resistor Inductor 18 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Resistance Power Voltage Current 19 / 25 Resistance of a material always decreases if number of free electrons available become more temperature of material is decreased temperature of material is increased none of the above is correct 20 / 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 none of the above length of heating element has no effect on heating if water length of heating element should be increased 21 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to the release of conduction electrons from parent atoms mutual collisions between conducting electrons mutual collisions between metal atoms collisions between conduction electrons and atoms 22 / 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 sum of IR drops equals the applied e.m.f. same current passes in turn through both 23 / 25 Resistance of a tungsten lamp as applied voltage increases increases decreases remains same none of the above 24 / 25 If the efficiency of a machine is to be high what should be low ? kWh consumed True component of power Losses Input power 25 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Aluminum Copper Carbon Brass 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
