Sail E0 Webinar

MCQs

Total Questions : 90 | Page 6 of 9 pages
Question 51. An electron in the conduction band
  1.    Loses its charge easily
  2.    Has lower energy than the electron in the valence band
  3.    Jumps to the top of the crystal
  4.    Has higher energy than the electron in the valence band
 Discuss Question
Answer: Option D. -> Has higher energy than the electron in the valence band
Question 52. For a P-N diode, the number of minority carriers crossing the junction depends on
  1.    Potential barrier
  2.    Forward bias voltage
  3.    None of these
  4.    Rate of thermal generation of electron hole pairs
 Discuss Question
Answer: Option D. -> Rate of thermal generation of electron hole pairs
Question 53. The forbidden energy gap between the valence band and conduction band will be least in case of
  1.    All of these
  2.    Semiconductors
  3.    Metals
  4.    Insulators
 Discuss Question
Answer: Option C. -> Metals
Question 54. Power diodes are generally
  1.    Either of the above
  2.    None of these
  3.    Silicon diodes
  4.    Germanium diodes
 Discuss Question
Answer: Option C. -> Silicon diodes
Question 55. Which variety of copper has the best conductivity?
  1.    Hard drawn copper
  2.    Pure annealed copper
  3.    Induction hardened copper
  4.    Copper containing traces of silicon
 Discuss Question
Answer: Option B. -> Pure annealed copper
Question 56. When avalanche breakdown occurs covalent bonds are not affected.
  1.    False
  2.    True
 Discuss Question
Answer: Option A. -> False
Question 57. Silicon is not suitable for fabrication of light emitting diodes because it is
  1.    Wideband gap semiconductor
  2.    Direct band gap semiconductor
  3.    Narrowband gap semiconductor
  4.    An indirect band gap semiconductor
 Discuss Question
Answer: Option D. -> An indirect band gap semiconductor
Question 58. Free electrons exist in
  1.    Second band
  2.    First band
  3.    Third band
  4.    Conduction band
 Discuss Question
Answer: Option D. -> Conduction band
Question 59. In a half wave rectifier, the load current flows
  1.    For full cycle
  2.    Only for the positive half cycle of the input signal
  3.    Only for the negative half cycle of the input signal
  4.    For less than fourth cycle
 Discuss Question
Answer: Option B. -> Only for the positive half cycle of the input signal
Question 60. Assertion (A): In p-n-p transistor collector current is termed negative.Reason (R): In p-n-p transistor holes are majority carriers.
  1.    A is false but R is true
  2.    Both A and R are true and R is correct explanation of A
  3.    A is true but R is false
  4.    Both A and R are true but R is not a correct explanation of A
 Discuss Question
Answer: Option D. -> Both A and R are true but R is not a correct explanation of A

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

DSP Combined 1 Free Revision Test SAIL JO E-0
GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0
BSP Plant Specific Review Test SAIL JO E-0
BSL Combined 1 Free Revision Test SAIL JO E-0
GFM Combined 1 Free Revision Test SAIL JO E-0