- 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) Ex = Ey = 0, By = Bz = 0.
- 2) Ey = Ez = 0, By = Bz = 0.
- 3) Ex = Ey = 0, Bx = By = 0.
- 4) None of these
-
Show Answer Report Discussion in forumAnswer : 1) Ex = Ey = 0, By = Bz = 0.
Solution : Wave propagating in (+ y) direction. H in (+ x) direction Then E will be in (+ z) direction. So, Ex = Ey = 0 and By = Bz = 0.
discussion
Answer : 1) Ex = Ey = 0, By = Bz = 0.
-
-
-
( 2 ) 1 Maxwell is the same as
- 1) 10-8 weber.
- 2) 108 weber.
- 3) 104 weber.
- 4) 10-4 weber.
-
Show Answer Report Discussion in forumAnswer : 1) 10-8 weber.
Solution : 1 Maxwell = 1 gauss x cm2 = 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 anti-parallel atomic magnetic moments is
- 1) an anti-ferromagnet.
- 2) ferrimagnet
- 3) a ferrite.
- 4) non-magnetic
-
Show Answer Report Discussion in forumAnswer : 1) an anti-ferromagnet.
Solution : An anti-ferromagnet is a material with unequal anti-parallel atomic magnetic moments.
discussion
Answer : 1) an anti-ferromagnet.
-
-
-
( 4 ) The unit of electric field intensity is
- 1) N / C.
- 2) N / Ampere.
- 3) F / m.
- 4) F/ m2.
-
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 = πD2.
- 2) E = πD.
- 3) E = D2 / 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) gamma-rays.
- 2) x-rays.
- 3) alpha particles.
- 4) neutrons.
-
Show Answer Report Discussion in forumAnswer : 3) alpha particles.
Solution : X-rays 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 m2 x s-2 x A-2 ).
discussion
Answer : 3) Henry
-