ECAT Pre Computer Science Chapter 16 online mcq test with answers for Physics chapter 16 (Alternating Current)

ECAT Physics Chapter 16 Alternating Current Online Test

Sr. #	Questions	Answers Choice
1	For a n-p-n transistor, the conventional current equation can be written as	I<sub>E</sub>+ I<sub>C</sub>= I<sub>B</sub> I<sub>C</sub>- I<sub>B</sub>= I<sub>E</sub> I<sub>C</sub>+ I<sub>B</sub>= I<sub>E</sub> I<sub>B</sub>+ I<sub>E</sub>= I<sub>C</sub>
2	In a normally biased n-p-n transistor, an electron c current I_Eflows from the	emitter into the base collector into the base base into collector none of these
3	In n-p-n transistor, emitter base junction is kept	reversed forward biased may be reversed or may be forward biased none of these
4	For normal operation of transistor, the batteries	V<sub>CC</sub>is of much lower value than V<sub>BB</sub> V<sub>CC</sub>is of much higher value than V<sub>BB</sub> V<sub>CC is equal to</sub>V<sub>BB</sub> none of these
5	For the normal operation of the transistor, its	emitter-base and collector base junctions are forward biased emitter-base junction is reversed biased and collector base junction is forward biased emitter-base junction is forward biased and collector-base junction is reverse biased any one of these
6	Which of the following has a great concentration of impurity	base emitter collector none of these
7	In a transistor, the central region is called	collector emitter base none of them
8	In a transistor, if the central region is n-type, then this type of transistor is known as	n-p-n transistor p-n-p transistor either of these none of these
9	In a transistor, if the central region is p-type then this type of transistor is known as	p-n-p transistor n-p-n transistor either of these none of these
10	Which of the following diodes can operate in the reverse biased condition	photo diode light emitting diode photo voltaic cell none of these
11	Which of the following diode is used to derive the current in external circuit when light is incident in the circuit	photo diode light emitting diode photo voltaic cell none of these
12	Which of the following diode is used for the detection of light	photo diode light emitting diode photo voltaic cell all of them
13	In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.	photo diode light emitting diode photo voltaic cell all of them
14	In which of the following components, pn-junction is used	light emitting diode photo diode photo voltaic cell all of these
15	The circuit which is used to smooth the output voltage of the full-wave rectification is known as	transformer rectifier filter none of these

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