A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Basic Concept of Electricity }



85.  V B is based on
A. Gauss's law
B. Ampere's law
C. Faraday's law
D. Ohm's law
Discussion
86.  The Biot-Savart's law is a general modifi-cation of
A. Coulomb law
B. Ampere's law
C. Faraday's law
D. Ohm's law
Discussion
87.  The direction of mechanical force experienced on a current carrying conductor placed in a magnetic field is determined by
A. Fleming's left hand rule
B. Fleming's right hand rule
C. Helix rule
D. Cork screw rule
Discussion
88.  If a current carrying conductor is placed in a magnetic field, the mechanical force experienced on the conductor is determined by
A. simple product
B. dot product
C. cross product
D. any of these
Discussion
89. The force experienced by a current carrying conductor lying parallel to a magnetic field is
A. zero
B. B I /
C. B I / sin 0
D. B I /cos 0
Discussion
90. An in finitely long conductor carrying a current is embedded in a semi-infinite medium of permeability pp as shown in the given figure. For itti > ja2, the conductor will experience
A. no force
B. a force that moves it away from the interface
C. a force towards the interface
D. a force parallel to the interface.
Discussion
91. A straight conductor of length / moving with a velocity v in the presence of a magnetic field of flux density B directed at an angle 0 with the direction of v experiences a force. Which of the following statement(s) is/are true for the magnitude of the force? 1. It is independent of 0.2. It is proportional to /2. 3. It is proportional to B. 4. It is independent of v. Select the correct answer from the codes given below :Codes :
A. 1, 2 and 3
B. 4 alone
C. 3 alone
D. 2 and 4
Discussion

Page 13 of 25

« 11 12  13  1415 »