A Best Way To Crack Gorenment Job Exams

Electrical Engineering Objective Questions { Electromagnetism }

176. Susceptibility is positive for
A. non-magnetic substances
B. diamagnetic substances
C. ferromagnetic substances
D. none of the above
Discuss in Forum

177. Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per metre of length of each conductor will be
A. 100 N
B. 10 N
C. 1 N
D. O. 1 N
Discuss in Forum

178. A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T; the force on the conductor will be
A. 240 N
B. 24 N
C.2.4 N
D. 0.24 N
Discuss in Forum

179. A 200 turn coil having an axial length f 30 mm and a radius of 10 mm is ivoted in a magnetic field having a flux ensity of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on e coil will be
A.4.8 N-m
B. OAS N-m
C.0.048 N-m
D. 0.0048 N-m
Discuss in Forum

180. An electromagnet has 50 turns and a rrent of 1 A flows through the coil. the length of the magnet circuit is mm, what is the magnetic field ngth?
A.500 AT/m
B. 250 AT/m
C.5 AT/m
D. 2.5 AT/m
Discuss in Forum

181. It is the magnitude and the direction rce per 1.1 m length of a pair of uctors of a direct current line ing 10 amperes and spaced 100 mm
A.22x 10-8N
B. 22 x 10-7N
C.22x 10-6N
D. 22 x 10-5N
Discuss in Forum

182. are cross-sectional magnet has a trength of 1 x 10-3 Wb and ctional area of 20 mm x 20 mm.What is the strength at a distance 100 mm from the unit pole in air?
A.?3 38 NNVb
B. 633 .8 N/Wb
C. 6338 1?INVb
D. 633 80I/Wb
Discuss in Forum

Page 26 of 36

« 24 25  26  2728 »