Semiconductor Basics Online Test

1) When the diode is forward-biased and the bias voltage is increased, the forward current will


2) When diode is forward-biased and the bias voltage is increased, the voltage across the diode(assuming practical diode model) will


3) When a diode is reverse-biased and the bias voltage is increased, the reverse current (assuming the practical model) will


4) When a diode is reverse-biased and the bias voltage is increased, the reverse current (assuming the complete model) will


5) When a diode is forward-biased and the bias voltage is increased, the voltage across the diode (assuming the complete model) will


6) If the forward current in a diode is increased, the diode voltage (assuming the practical model) will


7) If the forward current in a diode is decreased, the diode voltage (assuming the complete model) will


8) If the barrier potential of a diode is exceeded, the forward current will,


9) Every known element has


10) An atom consists of


11) The nucleus of an atom is made up of


12) The atomic number of silicon is


13) The atomic number of germanium is


14) The velence shell in the silicon atom has number designation of


15) Velence electrons are


16) A positive ion is formed when


17) The most widely used semiconductive material in electronic devices is


18) The energy band in which free electrons exist is the


19) Electron-hole pairs are produced by


20) Recombination is when


21) In a semiconductor crystal, the atoms are held together by


22) Each atom in a silicon crystal has


23) The current in a semiconductor is produced by


24) In an Intrinsic semiconductor,


25) The process of adding an impurity to an intrinsic semiconductor is called


26) The difference between an insulator and a semiconductor is


27) A trivalent impurity is added to silicon to create


28) The purpose of a pentavalent impurity is to


29) The majority carriers in an n-type semiconductor are


30) Holes in an n-type semiconductor are


31) The pn junction is formed by


32) The depletion region is created by


33) The depletion region consists of


34) The term bias means


35) To forward bias a diode,


36) When a diode is forward-biased,


37) Although current is blocked in reverse bias,


38) For a silicon diode, the value of the forward-bias voltage typically


39) When forward-biased, a diode


40) When a voltmeter is placed across a forward-biased diode, it will read a voltage approximately equal to


41) A silicon diode is in series with a 1.0 KO resistor and a 5 V battery. If the anode is connected to the positive battery terminal, the cathode with respect to the negative battery terminal is


42) The postive lead of an ohmmeter is connected to the anode of a diode and the negative lead is connected to the cathode. The diode is












































Description:

This test includes all the basic concepts of semiconductor devices. I referred to some of the electronics engineering books and created this test.
This test will be useful for the persons who are preparing for UPSC Engineering services exam and also to any of the govt PSU written exams.

Tags:

Electronics

Discussion

Papa's Ladli

valence electronx are a. in the closet orbit to the nucleus b. in the moxt distant orbit from the nucleus c. in various orbit around the nucleus d.not associated with particular atom... which option is correct ????

2512 days 2 hours ago

nisha

thanks.......its gud for me....

2991 days 8 hours 11 minutes ago

divya mohan

nice test :)

3785 days 3 hours 50 minutes ago

keerthana

Nice test!!!!

3901 days 12 hours 44 minutes ago

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