ECAT Pre Engineering Physics Chapter 18 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 18 Electronics Physics MCQ`s Test

Sr.#	Question	Answer
1	The reverse saturation current in a PN junction diode is only due to	A. Majority carriers B. Minority Carriers C. Acceptor ions D. Donor ions
2	If both the inputs given to a gate ae 1 such that the output is 0, then it is:	A. AND gate B. NOR gate C. OR gate D. NOT gate
3	The number of LED'S needed to display all the digits is:	A. Four B. Five C. Nine D. Six
4	In a transistor, collector current is controlled by	A. Collector voltage B. Base current C. Collector resistance D. All of the above
5	Whenever a covalent bond breaks, it creates:	A. An electron B. A hole C. An electron-hole pair D. A positron
6	In describing function of digital systems, 1 represents:	A. Closed switch B. True Statement C. Lighted bulb D. Only (B) and (C)
7	Truth table of logic function:	A. Summarizes its output values B. Tabulates all its input conditions only C. Display all its input/output possibilites D. Is not based on logic algebra
8	The electric field lines start from	A. Positive charge B. Negative charge C. Either A or B D. Neutron
9	A transistor has:	A. One region B. Two regions C. Three regions D. Four regions
10	The intensity at a point due to a charge is inversely proportional to	A. Amount of charge B. Size of the charge C. Distance between charge and the point D. Square of the distance from the charge