Sail E0 Webinar

MCQs

Total Questions : 164 | Page 3 of 17 pages
Question 21. A cable carrying alternating current has
  1.    Hysteresis losses only
  2.    Hysteresis and leakage losses only
  3.    Hysteresis, leakage and copper losses only
  4.    Hysteresis, leakage, copper and friction losses
 Discuss Question
Answer: Option B. -> Hysteresis and leakage losses only
Question 22. In congested areas where excavation is expensive and inconvenient 'draw in system' of laying of underground cables is often adopted.
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
Question 23. The minimum dielectric stress in a cable is at
  1.    Armour
  2.    Bedding
  3.    Conductor surface
  4.    Lead sheath
 Discuss Question
Answer: Option D. -> Lead sheath
Question 24. The breakdown voltage of a cable depends on
  1.    Presence of moisture
  2.    Working temperature
  3.    Time of application of the voltage
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 25. High tension cables are generally used up to
  1.    11 kV
  2.    33 kV
  3.    66 kV
  4.    132 kV
 Discuss Question
Answer: Option A. -> 11 kV
Question 26. Low tension cables are generally used up to
  1.    200 V
  2.    500 V
  3.    700 V
  4.    1000 V
 Discuss Question
Answer: Option D. -> 1000 V
Question 27. A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become
  1.    One half
  2.    Double
  3.    Four times
  4.    None of the above
 Discuss Question
Answer: Option A. -> One half
Question 28. The breakdown of insulation of the cable can be avoided economically by the use of
  1.    Inter-sheaths
  2.    Insulating materials with different dielectric constants
  3.    Both (A) and (B)
  4.    None of the above
 Discuss Question
Answer: Option C. -> Both (A) and (B)
Question 29. In a cable, the maximum stress under operating conditions is at
  1.    Insulation layer
  2.    Sheath
  3.    Armour
  4.    Conductor surface
 Discuss Question
Answer: Option D. -> Conductor surface
Question 30. Capacitance grading of cable implies
  1.    Use of dielectrics of different permeabilities
  2.    Grading according to capacitance of cables per km length
  3.    Cables using single dielectric in different concentrations
  4.    Capacitance required to be introduced at different lengths to counter the effect of inductance
 Discuss Question
Answer: Option A. -> Use of dielectrics of different permeabilities

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