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	The bridge circuit of full wave rectification uses	one diode two diode three diode four diode
2	In half wave rectification	both halves of the input voltage is used only one half of the input voltage is used either of these none of these
3	During the negative half-cycle of the half-wave rectification, the diode	does not conduct conducts either of these none of these
4	During the positive half-cycle in the half-wave rectification,the diode	does not conduct conducts either of these neither of these
5	The output voltage of half wave rectification is in the form of	a smooth curve a smooth wave pulses all of the above
6	Conversion of alternating current into direct current is called	amplification rectification conduction polarization
7	A diode characteristic curve is a plot between	current and time voltage and time voltage and current forward voltage and reversed voltage
8	When the pn-junction is connected reversed biased, its resistance is of the order of	few ohms few kilo-ohms few mega-ohms few mili-ohms
9	When the pn-junction is in reversed biased, current flows through the junction due to the	majority carriers minority carriers either of them none of them
10	When the pn-junction is forward biased. the current flows through it is of the order of	mili-amperes amperes nano-amperes micro-amperes
11	When the p-n junction is forward biased its resistance is of the order of	few mega ohms few kilo ohms few ohms few milli ohms
12	The value of the potential difference across the depletion region for the case of germanium is	0.3 V 0.5 V 0.7 V 0.9 V
13	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	2nd group fourth group fifth group sixth group
14	Average value of A.C voltage during one cycle is	1 Zero Maximum Variable
15	A changing magnetic flux creates around itself	An electromotive force An electric field (changing electric flux) Magnetic field None of the above

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