Sail E0 Webinar

MCQs

Electromagnetic Induction, Alternating Current And Voltage

Total Questions : 385 | Page 36 of 39 pages
Question 351. Mutually inductance between two magnetically coupled coils depends on
  1.    The number of their turns
  2.    Cross-sectional area of their common core
  3.    Permeability of the core
  4.    All of the listed here
 Discuss Question
Answer: Option D. -> All of the listed here
Question 352. Reversing the field or the current will reverse the force on the conductor.
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes
Question 353. Higher the self-inductance of a coil,
  1.    Lower the e.m.f. induced
  2.    Greater the flux produced by it
  3.    Longer the delay in establishing steady current through it
  4.    Lesser its weber-turns
 Discuss Question
Answer: Option C. -> Longer the delay in establishing steady current through it
Question 354. Increasing the field or increasing the current will decrease the force on the conductor.
  1.    No
  2.    Yes
 Discuss Question
Answer: Option A. -> No
Question 355. The direction of induced e.m.f. can be found by
  1.    Laplace's law
  2.    Fleming's right hand rule
  3.    Kirchhoff s voltage law
  4.    Lenz's law
 Discuss Question
Answer: Option D. -> Lenz's law
Question 356. In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will
  1.    Remains same
  2.    Increases
  3.    None of the listed here
  4.    Decreases
 Discuss Question
Answer: Option D. -> Decreases
Question 357. A moving magnetic field will produce the same effect as a conductor that is moving.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 358. The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns.
  1.    No
  2.    Yes
 Discuss Question
Answer: Option A. -> No
Question 359. The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be
  1.    12 mH
  2.    3 mH
  3.    24 mH
  4.    48 mH
 Discuss Question
Answer: Option B. -> 3 mH
Question 360. The polarity of the induced voltage can be determined by using the left-hand generator rule.
  1.    No
  2.    Yes
 Discuss Question
Answer: Option B. -> Yes

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