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 value of relative permittivity of different dielectrics are	A. Equal B. Different C. Greater than one D. Smaller than one
2	In reverse-biased p-n junction, the reverse current is due to flow of:	A. Minority charge carriers B. Majority charge carriers C. Free electrons from p to n-region D. Holes from n to p-region
3	A digital system deals with quantities which has discrete values:	A. Two in number B. One in number C. Three in number D. Four in number
4	If the distance between two charges is doubled, the force between them will become	A. Double B. Half C. Three times D. One fourth
5	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
6	Electric field lines emerge from the charges in	A. One dimension B. Two dimensions C. Three dimensions D. Four dimensions
7	Most of the electrons in the base of an NPN transistor flow	A. Out of the base lead B. Into the collector C. Into the emit D. Into the base supply
8	In a transistor, collector current is controlled by	A. Collector voltage B. Base current C. Collector resistance D. All of the above
9	The use of chips in electrons is described in the form of:	A. Yellow boxes B. Black boxes C. Red boxes D. White boxes
10	Electric lines of force	A. Intersect each other B. Are always parallel C. Are always anti-parallel D. Never intersect