1) In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor etcetera? a) Voltage b) Current c) Both voltage and current d) Neither voltage nor current 2) Which of the following is not an expression power? a) P=VI b) P=I2R c) P=V2/R d) P=I/R 3) A 250V bulb passes a current of 0.3A. Calculate the power in the lamp. a) 75W b) 50W c) 25W d) 90W 4) A current of 5A flows in a resistor of 2 ohms. Calculate the energy dissipated in 300 seconds in the resistor. a) 15kJ b) 15000kJ c) 1500J d) 15J 5) The Thevenin voltage is the__________ a) Open circuit voltage b) Short circuit voltage c) Open circuit and short circuit voltage d) Neither open circuit nor short circuit voltage 6) Out of the following, which one is not a source of electrical energy? a) Solar cell b) Battery c) Potentiometer d) Generator 7) Which, among the following is the right expression for converting from delta to star? a) R1=Ra*Rb/(Ra+Rb+Rc), R2=Rb*Rc/(Ra+Rb+Rc), R3=Rc*Ra/(Ra+Rb+Rc) b) R1=Ra/(Ra+Rb+Rc), R2=Rb/(Ra+Rb+Rc), Rc=/(Ra+Rb+Rc) c) R1=Ra*Rb*Rc/(Ra+Rb+Rc), R2=Ra*Rb/(Ra+Rb+Rc), R3=Ra/(Ra+Rb+Rc) d) R1=Ra*Rb*Rc/(Ra+Rb+Rc), R2=Ra*Rb*Rc/(Ra+Rb+Rc), R3=Ra*Rb*Rc/(Ra+Rb+Rc) 8) Field lines move from __________ a) North to south b) South to north c) West to east d) East to west 9) According to Faraday’s laws of electromagnetic induction, an emf is induced in a conductor whenever? a) The conductor is perpendicular to the magnetic field b) Lies in the magnetic field c) Cuts magnetic lines of flux d) Moves parallel to the magnetic field 10) The direction of an induced e.m.f. is always such that it tends to set up a current opposing the motion or the change of flux responsible for inducing that e.m.f.”, this is the statement for? a) Fleming’s left hand rule b) Fleming’s right hand rule c) Faraday’s law d) Lenz’s law

Active Learning Quiz -Electrical

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