Sail E0 Webinar

MCQs

Total Questions : 149 | Page 3 of 15 pages
Question 21. An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
  1.    Good
  2.    Open
  3.    Shorted
  4.    Partly shorted
 Discuss Question
Answer: Option C. -> Shorted
Question 22. When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
  1.    Increases
  2.    Decreases
  3.    Remains the same
  4.    Doubles
 Discuss Question
Answer: Option B. -> Decreases
Question 23. When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
  1.    Is quartered
  2.    Quadruples
  3.    Doubles
  4.    Does not change
 Discuss Question
Answer: Option A. -> Is quartered
Question 24. The following coils are in parallel: 75 µH, 40 µH, 25 µH, and 15 µH. The total inductance is approximately
  1.    6.9 µH
  2.    14 µH
  3.    2.2 µH
  4.    155 µH
 Discuss Question
Answer: Option A. -> 6.9 µH
Question 25. Inductors add in parallel.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 26. A 320 µH coil is in series with a 3.3 kΩ resistor. How long does it take for current to build up to its full value?
  1.    0.48 s
  2.    0.48 ms
  3.    0.48 µs
  4.    48 s
 Discuss Question
Answer: Option C. -> 0.48 µs
Question 27. A 240 µH inductor is equivalent to a
  1.    0.240 mH inductor
  2.    0.000240 mH inductor
  3.    240 mH inductor
  4.    240 H inductor
 Discuss Question
Answer: Option A. -> 0.240 mH inductor
Question 28. The permeability of a core material is an indication of the ability of the material to establish a magnetic field.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 29. The inductance of an iron-core coil decreases if
  1.    The number of turns is decreased
  2.    The iron core is removed
  3.    The length of the coil decreases
  4.    None of the above
 Discuss Question
Answer: Option A. -> The number of turns is decreased
Question 30. Two inductors, L1 and L2, are in parallel. L1 has a value of 25 µH and L2 a value of 50 µH. The parallel combination is in series with L3, a 20 µH coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is
  1.    87 mA
  2.    870 mA
  3.    87 A
  4.    337 mA
 Discuss Question
Answer: Option B. -> 870 mA

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