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 carbon resistor wire wound resistor variable resistor metallic resistor 2 / 25 An electric filament bulb can be worked from Battery supply only A.C. supply only D.C. supply only All above 3 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Power are additive Currents are additive Voltages are additive Elements have individual currents 4 / 25 For which of the following ‘ampere second’ could be the unit ? Energy Power Charge Reluctance 5 / 25 With rise in temperature the resistance of pure metals decreases remains constant increases first increases and then decreases 6 / 25 If the efficiency of a machine is to be high what should be low ? True component of power Input power Losses kWh consumed 7 / 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 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 Resistance of a material always decreases if temperature of material is increased number of free electrons available become more temperature of material is decreased none of the above is correct 10 / 25 Which one of the following does not have negative temperature co-efficient ? Paper Aluminium Mica Rubber 11 / 25 All of the following are equivalent to watt except amperes/volt amperes x volts joules/sec. (amperes) ohm 12 / 25 Ohm’s law is not applicable to vacuum tubes high voltage circuits carbon resistors circuits with low current densities 13 / 25 The resistance of a conductor varies inversely as length area of cross-section resistivity temperature 14 / 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 48 Q 36 Q 18 Q 15 / 25 Which is the best conductor of electricity ? Silver Carbon Iron Copper 16 / 25 Two resistors are said to be connected in series when sum of IR drops equals the applied e.m.f. both carry the same value of current total current equals the sum of branch currents same current passes in turn through both 17 / 25 With rise in temperature the resistance of semi-conductors increases first increases and then decreases decreases remains constant 18 / 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 19 / 25 Electric current passing through the circuit produces luminous effect magnetic effect chemical effect thermal effect 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 remain same decrease increase 21 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Resistance Voltage Current Power 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 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 23 / 25 Varistors are non-linear resistors carbon resistors insulators resistors with zero temperature coefficient 24 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Aluminum Copper Carbon Brass 25 / 25 Resistance of a tungsten lamp as applied voltage increases increases decreases none of the above remains same 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
