[{"id":111053,"question":"The bridge circuit of full wave rectification uses","choices":[{"text":"one diode","value":"A"},{"text":"two diode","value":"B"},{"text":"three diode","value":"C"},{"text":"four diode","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111051,"question":"In half wave rectification","choices":[{"text":"both halves of the input voltage is used","value":"A"},{"text":"only one half of the input voltage is used","value":"B"},{"text":"either of these","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111050,"question":"During the negative half-cycle of the half-wave rectification, the diode","choices":[{"text":"does not conduct","value":"A"},{"text":"conducts","value":"B"},{"text":"either of these","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111048,"question":"During the positive half-cycle in the half-wave rectification,the diode","choices":[{"text":"does not conduct","value":"A"},{"text":"conducts","value":"B"},{"text":"either of these","value":"C"},{"text":"neither of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111045,"question":"The output voltage of half wave rectification is in the form of","choices":[{"text":"a smooth curve","value":"A"},{"text":"a smooth wave","value":"B"},{"text":"pulses","value":"C"},{"text":"all of the above","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":111043,"question":"Conversion of alternating current into direct current is called","choices":[{"text":"amplification","value":"A"},{"text":"rectification","value":"B"},{"text":"conduction","value":"C"},{"text":"polarization","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111042,"question":"A diode characteristic curve is a plot between","choices":[{"text":"current and time","value":"A"},{"text":"voltage and time","value":"B"},{"text":"voltage and current","value":"C"},{"text":"forward voltage and reversed voltage","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":111040,"question":"When the pn-junction is connected reversed biased, its resistance is of the order of","choices":[{"text":"few ohms","value":"A"},{"text":"few kilo-ohms","value":"B"},{"text":"few mega-ohms","value":"C"},{"text":"few mili-ohms","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111037,"question":"When the pn-junction is in reversed biased, current flows through the junction due to the","choices":[{"text":"majority carriers","value":"A"},{"text":"minority carriers","value":"B"},{"text":"either of them","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":111035,"question":"When the pn-junction is forward biased. the current flows through it is of the order of","choices":[{"text":"mili-amperes","value":"A"},{"text":"amperes","value":"B"},{"text":"nano-amperes","value":"C"},{"text":"micro-amperes","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":111034,"question":"When the p-n junction is forward biased its resistance is of the order of","choices":[{"text":"few mega ohms","value":"A"},{"text":"few kilo ohms","value":"B"},{"text":"few ohms","value":"C"},{"text":"few milli ohms","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":111033,"question":"The value of the potential difference across the depletion region for the case of germanium is","choices":[{"text":"0.3 V","value":"A"},{"text":"0.5 V","value":"B"},{"text":"0.7 V","value":"C"},{"text":"0.9 V","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":111032,"question":"A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from","choices":[{"text":"2nd group","value":"A"},{"text":"fourth group","value":"B"},{"text":"fifth group","value":"C"},{"text":"sixth group","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":111030,"question":"Average value of A.C voltage during one cycle is","choices":[{"text":"1","value":"A"},{"text":"Zero","value":"B"},{"text":"Maximum","value":"C"},{"text":"Variable","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":111029,"question":"A changing magnetic flux creates around itself","choices":[{"text":"An electromotive force","value":"A"},{"text":"An electric field (changing electric flux)","value":"B"},{"text":"Magnetic field","value":"C"},{"text":"None of the above","value":"D"},{"value":"E"}],"correctAnswer":2}]