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 A resistance having rating 10 ohms 10 W is likely to be a wire wound resistor variable resistor metallic resistor carbon resistor 2 / 25 An electric filament bulb can be worked from Battery supply only All above A.C. supply only D.C. supply only 3 / 25 Resistance of a tungsten lamp as applied voltage increases none of the above decreases increases remains same 4 / 25 For which of the following ‘ampere second’ could be the unit ? Power Charge Reluctance Energy 5 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Resistance Power Voltage Current 6 / 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 7 / 25 Resistance of a material always decreases if number of free electrons available become more temperature of material is increased none of the above is correct temperature of material is decreased 8 / 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 9 / 25 If the efficiency of a machine is to be high what should be low ? True component of power kWh consumed Input power Losses 10 / 25 Ohm’s law is not applicable to carbon resistors circuits with low current densities vacuum tubes high voltage circuits 11 / 25 Varistors are insulators non-linear resistors resistors with zero temperature coefficient carbon resistors 12 / 25 Electric current passing through the circuit produces thermal effect luminous effect chemical effect magnetic effect 13 / 25 The resistance of a conductor varies inversely as area of cross-section temperature resistivity length 14 / 25 Two resistors are said to be connected in series when sum of IR drops equals the applied e.m.f. same current passes in turn through both total current equals the sum of branch currents both carry the same value of current 15 / 25 With rise in temperature the resistance of semi-conductors increases decreases first increases and then decreases remains constant 16 / 25 Which one of the following does not have negative temperature co-efficient ? Rubber Aluminium Mica Paper 17 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Inductor Reactor Capacitor Resistor 18 / 25 With rise in temperature the resistance of pure metals first increases and then decreases decreases remains constant increases 19 / 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 20 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Copper Aluminum Carbon Brass 21 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Currents are additive Voltages are additive Power are additive Elements have individual currents 22 / 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 none of the above length of heating element should be decreased length of heating element should be increased length of heating element has no effect on heating if water 23 / 25 Which is the best conductor of electricity ? Carbon Iron Copper Silver 24 / 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 remain same decrease increase 25 / 25 All of the following are equivalent to watt except amperes/volt amperes x volts joules/sec. (amperes) ohm 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
