Sail E0 Webinar

MCQs

Total Questions : 227 | Page 1 of 23 pages
Question 1. In an intrinsic semiconductor, the number of free electrons
  1.    Impossible to say
  2.    Is greater than the number of holes
  3.    Equals the number of holes
  4.    Is less than the number of holes
  5.    None of these
 Discuss Question
Answer: Option C. -> Equals the number of holes
Question 2. The rise time of a pulse waveform is the time required for the voltage to rise:
  1.    from zero to its rms value
  2.    from 10% of the peak value to 70.7% of the peak value
  3.    None of these
  4.    from zero to its peak value
  5.    from 10% of the peak value to 90% of the peak value
 Discuss Question
Answer: Option E. -> from 10% of the peak value to 90% of the peak value
Question 3. A device that converts mechanical into electrical energy is?
  1.    solar cell
  2.    generator
  3.    None of these
  4.    chemical cell
  5.    thermocouple
 Discuss Question
Answer: Option B. -> generator
Question 4. The total impedance of a parallel RLC circuit:
  1.    always decreases as the applied frequency increases
  2.    None of these
  3.    is maximum at the resonant frequency
  4.    is equal to the sum of the values of resistance, inductive reactance and capacitive reactance
  5.    always increases as the applied frequency increases
 Discuss Question
Answer: Option C. -> is maximum at the resonant frequency
Question 5. Which one of the following kinds of materials has the lowest permeability?
  1.    All of these
  2.    None of these
  3.    A paramagnetic material
  4.    A feiTomagnetic material
  5.    A diamagnetic material
 Discuss Question
Answer: Option E. -> A diamagnetic material
Question 6. For a pure capacitor:
  1.    None of these
  2.    ac current leads the voltage by 90 degree
  3.    ac current lags the voltage by 90 degree
  4.    ac current and voltage are exactly in phase
  5.    ac current is converted to dc voltage
 Discuss Question
Answer: Option B. -> ac current leads the voltage by 90 degree
Question 7. The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:
  1.    None of these
  2.    commutator
  3.    armature
  4.    rotor
  5.    battery
 Discuss Question
Answer: Option B. -> commutator
Question 8. Waveforms are graphs that show:
  1.    the passage of time on the vertical axis and amplitude on the horizontal axis
  2.    amplitude on the vertical axis and frequency on the horizontal axis
  3.    amplitude on the vertical axis and the passage of time on the horizontal axis
  4.    frequency on the vertical axis and amplitude on the horizontal axis
  5.    None of these
 Discuss Question
Answer: Option C. -> amplitude on the vertical axis and the passage of time on the horizontal axis
Question 9. In a pure inductor:
  1.    None of these
  2.    ac current is converted to dc voltage
  3.    ac current and voltage are exactly in phase
  4.    ac current lags the voltage by 90 degree
  5.    ac current leads the voltage by 90 degree
 Discuss Question
Answer: Option D. -> ac current lags the voltage by 90 degree
Question 10. When the collector current increases, what does the current gain do?
  1.    any of the above
  2.    decreases
  3.    stays the same
  4.    increases
  5.    None of these
 Discuss Question
Answer: Option D. -> increases

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

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0