UGC NET / JRF Electronic science Question Paper– II:December 2004

The University Grant Commission (UGC) conducted the National Eligibility Test (UGC NET/ JRF) for Junior Research Fellowship and Eligibility for Lectureship in December 2004 . Jagranjosh.com will provide questions from the respective segments for the benefit of the aspirants preparing for UGC NET/ JRF/ SLET recruitment exams. The question paper will help in the practice and thereby further the preparation procedure of the students.

Paper - II

1. Light falls on one end of a long open - circuited n - type semiconductor bar for low level injection the hole current is predominantly to :

(A) Drift (B) Diffusion 

(c)  Both drift and diffusion (D)Length of bar

2. Under high electric fields, in a semiconductor with increasing electric field :

(A)  The mobility of charge carriers  decreases and saturates

(B)  The mobility of charge carriers increases.

(C)  The Velocity of charges carrier increases.

(D)  None of the above.

3. The action of JFET in its equivalent circuit can be represented by :

(A) Current controlled current source (B) Current controlled voltage source 

(C) oltage controlled current source (D) Voltage controlled voltage source 

4. The function f(t) = -f (t+t/2, t-t/2) is said to have :

(A) even symmetry (B) Odd symmetry 

(C) Halfwave symmetry        (D)  Quarterwave Symmetry 

1. Light falls on one end of a long open - circuited n - type semiconductor bar for low level injection the hole current is predominantly to :

(A) Drift (B) Diffusion 

(c)  Both drift and diffusion (D)Length of bar

2. Under high electric fields, in a semiconductor with increasing electric field :

(A)  The mobility of charge carriers  decreases and saturates

(B)  The mobility of charge carriers increases.

(C)  The Velocity of charges carrier increases.

(D)  None of the above.

3. The action of JFET in its equivalent circuit can be represented by :

(A) Current controlled current source (B) Current controlled voltage source 

(C) oltage controlled current source (D) Voltage controlled voltage source 

4. The function f(t) = -f (t+t/2, t-t/2) is said to have :

(A) even symmetry (B) Odd symmetry 

(C) Halfwave symmetry   (D)  Quarterwave Symmetry 

Click Here to find Electronic science (December 2004) complete question paper.