 Algorithm
 Compiler Design
 Computer Fundamentals
 Computer Networks
 Computer Organization & Architecture
 DBMS
 Digital logic
 Information System
 Ms Office
 Operating System
 Programming & Data structure
 Software Engineering
 Software Testing
 System Programming
 Theory of computation
 Web technology
 Analog & Digital Circuits
 Control System
 Electronic Devices
 EMFT
 Junctions, Diodes & Tunnel
 Signals & systems
 Wireless Communication
 Engineering Mechanics
 Fluid Mechanics
 Heat Transfer
 I.C. Engines
 Power Engineering
 Strength of Materials
 Theory of Machines
 Thermodynamics
 Concrete Structure
 Construction & Structure engineering
 Costing & Valuation of Building Materials
 Errors & Adjustments
 Hydraulics
 Soil Mechanics
 Steel Structures
 Structural Analysis
 Surveying
 Traffic Engineering
 Water supply & waste water engineering
Computer Science/IT
Electronics & communications
Mechanical Engineering
Civil engineering
Electrical engineering


( 1 ) A plane wave magnetic field is represented by Bx = cos(y  ct). The electric and magnetic fields will be zero in the direction
 1) E_{x} = E_{y} = 0, B_{y} = B_{z} = 0.
 2) E_{y} = E_{z} = 0, B_{y} = B_{z} = 0.
 3) E_{x} = E_{y} = 0, B_{x} = B_{y} = 0.
 4) None of these

Show Answer Report Discussion in forumAnswer : 1) E_{x} = E_{y} = 0, B_{y} = B_{z} = 0.
Solution : Wave propagating in (+ y) direction. H in (+ x) direction Then E will be in (+ z) direction. So, E_{x} = E_{y} = 0 and B_{y} = B_{z} = 0.
discussion
Answer : 1) E_{x} = E_{y} = 0, B_{y} = B_{z} = 0.



( 2 ) 1 Maxwell is the same as
 1) 10^{8} weber.
 2) 10^{8} weber.
 3) 10^{4} weber.
 4) 10^{4} weber.

Show Answer Report Discussion in forumAnswer : 1) 10^{8} weber.
Solution : 1 Maxwell = 1 gauss x cm^{2} = 10^{4} x (10^{2})^{2} = 10^{4} x 10^{4} = 10^{8} Weber.
discussion
Answer : 1) 10^{8} weber.



( 3 ) A material with unequal antiparallel atomic magnetic moments is
 1) an antiferromagnet.
 2) ferrimagnet
 3) a ferrite.
 4) nonmagnetic

Show Answer Report Discussion in forumAnswer : 1) an antiferromagnet.
Solution : An antiferromagnet is a material with unequal antiparallel atomic magnetic moments.
discussion
Answer : 1) an antiferromagnet.



( 4 ) The unit of electric field intensity is
 1) N / C.
 2) N / Ampere.
 3) F / m.
 4) F/ m^{2}.

Show Answer Report Discussion in forumAnswer : 1) N / C.
Solution : Electric field intensity is the force experienced by a unit positive charge by another one charge. Hence, E = F / Q . Therefore, the unit of electric field is Newton per Coulomb.
discussion
Answer : 1) N / C.



( 5 ) XEROX machine is working on
 1) magnetic effect.
 2) electrostatic effect.
 3) heating effect of cuurent.
 4) peltier effect.

Show Answer Report Discussion in forumAnswer : 1) magnetic effect.
Solution : The process is to spray the electric charge upon the semiconductor surface, and flash the image which would copy and the ink would permanently stick due to the hot pressure from the semiconductor surface.
discussion
Answer : 1) magnetic effect.



( 6 ) Which of the following expression is correct for electric field strength?
 1) E = πD^{2}.
 2) E = πD.
 3) E = D^{2} / ε.
 4) E = D / ε.

Show Answer Report Discussion in forumAnswer : 4) E = D / ε.
Solution : In a dielectric material, the presence of an electric field E causes the bound charges in the material to slightly separate. Hence, the electric displacement field D is defined as D = E x ε.
discussion
Answer : 4) E = D / ε.



( 7 ) Which of following is not a vector?
 1) Linear momentum.
 2) Angular momentum.
 3) Electric potential.
 4) Electric field.

Show Answer Report Discussion in forumAnswer : 2) Angular momentum.
Solution : Angular momentum is not a vector.
discussion
Answer : 2) Angular momentum.



( 8 ) Electric field intensity ( E ) at any point in an electric field is equal to
 1) potential gradient
 2) ( potential gradient )^{2}.
 3) ( potential gradient )^{1/2}.
 4) ( potential gradient )^{1/3}.

Show Answer Report Discussion in forumAnswer : 1) potential gradient
Solution : Electric field intensity ( E ) at any point in an electric field is equal to potential gradient
discussion
Answer : 1) potential gradient



( 9 ) An electric field can deflect
 1) gammarays.
 2) xrays.
 3) alpha particles.
 4) neutrons.

Show Answer Report Discussion in forumAnswer : 3) alpha particles.
Solution : Xrays are EM waves and they would not be deflected by electric field. Neutrons are not charged. Alpha particles are charged. Thus, alpha particles could be deflected by electric field, because only charged particles could interact with electric field.
discussion
Answer : 3) alpha particles.



( 10 ) Which of the following is unit of inductance ?
 1) Webers/metre
 2) Ampere turns
 3) Henry
 4) Ohm

Show Answer Report Discussion in forumAnswer : 3) Henry
Solution : The henry (symbolized H) is the Standard International ( SI ) unit of inductance . Reduced to base SI units, one henry is the equivalent of one kilogram meter squared per second squared per ampere squared (kg x m^{2} x s^{2} x A^{2} ).
discussion
Answer : 3) Henry
