Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

N. Cyclotron in which the electric field is maintained at a constant frequency

Answer»

Hey MATE ^_^

Synchrotron CYCLOTRON in which the electric field is MAINTAINED at a constant frequency.

2.

Plz do answer this as fast as possible

Answer» \bold{Hey \: mate \: here \: is \:your \: ANSWER}

It is known as CENTRE of curvature. Any light passing from centre of curvature will pass undeviated IRRESPECTIVE of the TYPE of MIRROR it is.

\large{\red{\boxed{\mathbb{HOPE \:IT \:HELPS}}}}

PLEASE MARK AS BRAINLIEST
3.

What is the work done to increase the velocity of a car from 30km/h to 60km/h.If the massbof the car is 1500kg

Answer»

PLEASE CHECK the ATTACHMENT for the ANSWER :

4.

Q3. Name the union territory, which becomes the first destination to be fully run by solar power.

Answer»

Diu BECOMES first Union Territory to RUN 100% on solar power. Diu has become the first and only Union Territory in the country to be fully run on solar ENERGY.

5.

What is the reason behind cover ing words carrying electricity with rubber in some places

Answer»

Covering of PLASTIC is NECESSARY because plastic is a insulator and if there will be no covering of plastic or rubber we can FEEL electric shock after touching matalic conductor wire

6.

Oceans are called as store houses explain?Write an activity to show the reaction of Metals with acids?

Answer»

Because they CONTAIN a LARGE AMOUNT of SALT in them

7.

Whay happens to the magnitude of velocity with passage of time? Why?

Answer» \bold{Hey \: mate \: here \: is \:your \: ANSWER}

The magnitude of velocity SLOWLY decreases with passage of time due to the frictional force acting on it by other bodies. In absence of any force a body will CONTINUE in it's state of REST or UNIFORM motion in a straight line . This is also known as Newton's First law of motion.

\large{\red{\boxed{\mathbb{HOPE \:IT \:HELPS}}}}

PLEASE MARK AS BRAINLIEST
8.

Name the substance which remains in a test tube after heating ferrous sulphate

Answer» FERROUS OXIDE REMAINS
9.

Find out work done by electric field in shifting a point charge 4root 2

Answer» POINT CHARGE potiential
10.

Differentiate between ac and dc motor name one source of each write any two advantages of ac over dc

Answer»

What are the advantages of AC over DC and vice-versa?

Still have a question? Ask your own!

What is your question?

Ad by Facebook Edu Hub

Facebook digital training hub.

Engage with your customers and GROW your business with digital marketing.

Learn More

7 ANSWERS



Ahmed Faizan, ELECTRICAL Engineer, Blogger, WordPress Web Developer

Answered Aug 13, 2018 · Upvoted by Yiannis Papelis, BS,MS,Ph.D., in EE (minor CS), ECE, and practicing robotici… · Author has 95answers and 224.1k answer views

Because of their inherent advantages, alternating current systems have REPLACED direct current systems in almost all modern utility power systems. The two major advantages of AC over DC systems are as follows:

Lower generating cost. An AC alternator is simple to construct, with no need for a complicated split RING commutator. In addition, the AC alternator permits a higher speed of rotation with lower maintenance cost and a lower cost of power generation.Easier voltage transformations. The voltage of an AC system can be changed by the use of a simple piece of electromagnetic equipment known as a transformer. The transformer permits the transmission of large amounts of electrical power at higher voltages for long distances with relatively small transmission LINES and thus a lower cost of transmission.

11.

Explain that why the speed of sound is not affected by wavelength and frequency

Answer»

The DATA CONVINCINGLY show thatwave FREQUENCY does not AFFECT wave speed. An increase in wave frequency caused a DECREASE in wavelength while the wave speedremained constant. ... So while the frequency did not affect thespeed of the wave, the tension in the medium (the rope) did

12.

Name a solid which is a good conductor of heat

Answer» DIAMOND is the best conductor of heat


HOPE IT WILL HELP YOU ✌️✌️✌️
13.

Show that potential energy is path independent

Answer»

Path independence. A direct consequence of the closed path test is that the WORK done by a conservative force on a PARTICLE moving between any TWO points does not depend on thepath taken by the particle. ... The work done by a conservative force is equal to the NEGATIVE of change in potential energy during that PROCESS

14.

why is current a scalar quantity???? not vector, eventhough current tells us the direction of for of electrons from positive to negative

Answer»

The ELECTRONS can FLOW either way through a wire depending which way around your positive and negative are. A SCALAR quantity doesn't havedirection, but current does becauseyou can change the direction of those little electrons in the wire and THUS thedirection the charge is moving!

15.

If the distance between two bodies is reduced to half of its initial value the gravitational force between them

Answer»

According to the LAW of gravitation, theforce of attraction between TWO bodiesis, When the DISTANCE is reduced tohalf, Thus, graviational force becomes four times the ORIGINAL force.Gravitational force acts on all objectsin proportion to their masses.

16.

Expression of momentum wave function in a one dimensional box

Answer» SCHRODINGER Equation for a particle in a one dimensional "box". Solutions for appropriate BOUNDARY conditions.Wave functions and obtain transition energies between various states. Values of average quantities such as position, momentum and energy.

A One Dimensional (1-d) Box V (X) = 0 for 0 < x < Lx (2.1) V (x ... - ..


if you are satisfied MARK me as a Brainliest

17.

Derive an expression for the period of revolution of a satellite in a circular orbit.

Answer»

Zjdjdkenf dnjzjendnxd

18.

explain the nature of images formed with the help of ray diagrams . when an object is placed at different points before a concave mirror

Answer»

Subsequently, the light rays will not converge on the object's side of the mirror to FORM a REAL image; nor can they be extended backwards on the OPPOSITE side of the mirror to INTERSECT to form a virtual image. ... An image is not formed when the object is located at the FOCAL point of a concave mirror.

19.

Electronic current produced in human body by the movement of charge particle is called _signals

Answer» STATIC CHARGE
.........
20.

Generally mobility of electrons in semiconductors is times the mobility of holes

Answer»

The conduction band electroneffective mass is USUALLY smaller than the valence band HOLE effective mass.This is ONE of the reasons that in a semiconductor the electron mobilityis usually larger than the hole mobility.

if you are SATISFIED MARK me as a Brainliest

21.

Chegg car a's mass is 1200 kg; car b's mass is 1500 kg. At collision, the two cars entangle perfectly, their wheels lock and they skid together for 10m in the theta = 60 direction before stopping. The coefficient of kinetic friction between tires and the road is 0.2. Find the speed of each car immediately before collision. Car a is going in the positive x-axis direction. Car b

Answer»

I don't KNOW the ANSWER BEHIND it

22.

If intensity of light is decreased what is the pattern electron

Answer»

Decreasing or increasing the amount of light produced a corresponding increase or decrease in the NUMBER ofelectrons liberated, but each still maintained the same energy. In other words, electrons ESCAPING their atomic bonds had energies that were DEPENDENT on the WAVELENGTH of light, not the intensity.

if you are satisfied MARK me as a Brainliest

23.

A liquid of density p is flowing with a speed v through a pipe of cross-sectional area a. The pipe is bent in the shape of a right angle as shown. What force should be exerted on the pipe at the corner to keep it fixed?

Answer»

<P>Answer:

The force exterted is \sqrt{2}pav^2

Explanation:

Density of the liquid = p

Speed = v

Cross-sectional area of the PIPE = a

The liquid will exert force on the pipe at the bend, this is the required force we need to calculate

Mass of the liquid flowing per second through the pipe

= density × area × velocity

= p × a × v

= pav

This is in the HORIZONTAL direction

Therefore, the momentum will be = (pav)v\hat i = pav^2\hat i

After the bend, the same AMOUNT of liquid will be flowing in the downwards direction

Therefore the momentum will be =  -pav^2\hat j

Force EXERTED = Change in momentum

or, \vec F= pav^2\hat i-(-pav^2\hat j)

\implies \vec F= pav^2\hat i+pav^2\hat j

Thus, the magnitude of the force = \sqrt{2}pav^2

24.

A coil is connected to a battery and a soft iron bar is hung near to it. The current is then reversed by reversibg the battery connections

Answer»

I don't KNOW the ANSWER BEHIND it

25.

How many significant figure in 00.20

Answer» HLO..

Here is UR answer..

Number of significant figure in 00.20 IS 2 .

HOPE ITS HELP U

THANKS...
26.

State the relationship between radius of curvature and focal length

Answer»

F=1/2 R this is the relationship

Plz FOLLOW EM

27.

What is the 3rd law of Kepler

Answer»

The 3rd Law of Kepler is....

LAW OF PERIODS : It states that the square of time period of REVOLUTION of planet around the sun is directly proportional to the cube of SEMI major axis of the ELLIPSE. ( average distance b/w sun and planets ).

T² ∝ r³

T² = k r³

28.

What are bad and good conductors of heat give two examples of each

Answer»

Metals are GOOD conductors of electricity and NON metal are BAD conductors of electricity.

Hope it will help you.
✌✌✌

29.

How will a freely suspended magnet align itself in northern hemisphere

Answer»

When a magnet is hanged it align itself in NORTHERN hemisphere because it was attrected by EARTH's south POLE

30.

What is mean by a thrust guyszz plzzzzzzzzz tell fast

Answer»

A thrust FAULT is a BREAK in the Earth's crust, across which older rocks are PUSHED above younger rocks.

31.

Explain this answer.

Answer»

D is the ANSWER of your QUESTION

32.

Tell me briefly, what is neuropsychology?

Answer»

Hello...

NEUROPSYCHOLOGY :-

✔️It's the branch neurology that investigates our physiological processes....

-----------------or----------------

✔It's the STUDY of/structure of our HUMAN brain and their BEHAVIOR TOWARDS Different situations..

️✔But what does a neuropsychologist do? 

➖They treat people with various types of nervous system disorders.

➖They work with doctors which keeps talking about the illnesses, injuries, and diseases of the brain and nervous system..

➖Which can internally affect the ways of different people accounding to their different kinds of their mood swings...

️✔️It takes about 2-3 years of specialized training to get through the subject [PsyD]

thank you...

33.

A 0.5 kg ball is dropped from such a height that it takes 4s to reach the ground. Calculate the change in momentum of the ball.

Answer» HOPE you UNDERSTAND but I am not SURE with the SOLUTION OK
34.

What Is red dwarf and describe it's energy

Answer»

A red DWARF (or M dwarf) is a small and cool star on the main sequence, of M spectral type. Red dwarfs RANGE in mass from about 0.075 to about 0.50 solar mass and have a surface temperature of less than 4,000 K. Sometimes K-type main-sequencestars, with masses between 0.50-0.8 solar mass, are ALSO INCLUDED.

35.

During the rainbow formation the act of prisms is formed by

Answer» REFRACTION is the ANS
36.

Draw equipotential surface in a constant electric field in z direction

Answer»

Define an equipotential SURFACE. DRAW equipotential surfaces:
(i) in the case of a single point CHARGE and
(ii) in a constant electric FIELD in Z-direction.
Why the equipotential surfaces about a single charge are not equidistant ?
(iii) Can electric field exist TANGENTIAL to an equipotential

created

Sep '16

last reply

Sep '16

1

reply



prasanna

Sep '16





37.

Find the velocity of c and instatneous center of zero velocity of bc

Answer» PLEASE SEARCH your QUESTION in Google. I THINK it will be better
38.

Why should not we store spirit or petrol near our living places?

Answer»

Because of these risks storing petrol safely is covered by legislation; and this applies to you if you store petrol. spirit or petrol has low ignition TEMPERATURE. So they TURN into GAS at ROOM temperature. So they are highly inflammable that means they easily catch FIRE at room temperature.

39.

Difference between identical transformation and canonical transformation

Answer»

Contact transformations were discovered by Sophus Lie in the 19th CENTURY. Within this context an infinitesimal homogeneous (time independent) contact transformation:

δqi=∂H∂piδt,δpi=−∂H∂qiδtδqi=∂H∂piδt,δpi=−∂H∂qiδt

is a coordinate transformation that leaves the system of EQUATIONS:

Δ=∣∣∣∣dp1,…,dpnp1,…,pndq1,…,dqn∣∣∣∣=0,∑ipidqi=0Δ=|dp1,…,dpnp1,…,pndq1,…,dqn|=0,∑ipidqi=0

invariant [1]. In this context we can interchange contact with canonical ACCORDING to Qmechanic's answer.

In the context of differential geometry, we make a distinction between symplectic transformations on dim(2n)dim(2n) symplectic manifolds and contact transformations on dim(2n+1)dim(2n+1) contact manifolds. This extends the time independent formulation into an extended phase space (time dependent). [2] We must now take care on how we use the phrase contact.

In both symplectic and contact frameworks, we can DEFINE a canonical STRUCTURE,

θ=pdq,Θ=pdq−Hdtθ=pdq,Θ=pdq−Hdt

respectively, that becomes invariant under their respective transformations.

40.

Difference between fixed and switched capacitor on distribution system

Answer»

A shunt capacitor planning strategy to reduce system resistive losses and improve voltage profile for distribution feeders has been proposed. The objective function consists of peak load loss, energy loss and shunt capacitor cost, while operational constraints such as bus voltage profile and real shunt capacitor size are considered throughout the overall solution procedure. A three-phase load flow program. Which accounts for the mutual coupling effect between conductors, unbalanced LOADING among phases, and feeders with multiple lateral branches, is APPLIED to enhance the computer simulation. The simplified feeder model has been developed to derive the equivalent circuit of minor lateral branches so that the data processing work for the feeder configuration can be reduced efficiently. Besides, the customer load patterns as well as the feeder load curve for various seasons are DERIVED so that the section load behaviour can be estimated more REALISTICALLY. According to the reactive load duration curve of the feeders studied, the capacitor operation strategy by considering both FIXED and switched shunt capacitors is developed to determine the proper size, location and switching time of capacitors to enhance the system operation efficiency. Two practical feeders in the Taipower distribution system are selected for demonstration to show the effectiveness of the proposed method. Capacitors with optimal size are installed according to the schemes derived by computer analysis. Field tests are then performed and the energy loss reduction as well as the improvement of power quality of the test feeders can be justified.

41.

A lightning conductor on the top of a building is made into a spike because

Answer»

Because surface charge density is inversely proportional to the AREA therefore the spike has less area to their surface charge density is HIGH and it can store MAXIMUM charge and transfer to the earth

42.

Calculate kinetic energy of an object of mass m and moving with velocity v

Answer» KINETIC ENERGY : 1/2 mv2
43.

Structure of mesencephelon

Answer»

Midbrain, also called mesencephalon, region of the DEVELOPING VERTEBRATE brainthat is composed of the tectum and tegmentum. The midbrain serves important functions in motor MOVEMENT, particularly movements of the eye, and in auditory and visual processing. It is located WITHIN the brainstem and between the two other developmental regions of the brain, the forebrain and the hindbrain; compared with those regions, the midbrain is relatively small.

44.

In a uniform circular motion the quantity the remains constant throughout its motion isa. acceleration b. Momentum c. kinetic energy d. velocity

Answer»

In a UNIFORM circular MOTION the QUANTITY the remains constant throughout its motion is
a) ACCELERATION

45.

What..is interia ???with one example

Answer»

Heya !!

here is your answer⤵️⤵️

The tendency of the mass is called inertia.

The body STATES rest in POSITION until any external force is applied is called first law of motion.

It is ALSO called as law of motion.

example :

when we put a luggage on CAR , it remains rest until we apply force.


hope my answer helps you


46.

Drinking water is a work or not according to physics?

Answer»

When you invert a water-bottle in a CONTAINER, the water rises and then stops at a PARTICULAR level --- as SOON as it TOUCHES the HOLE of the inverted ...

47.

Determining the difference in elevation between two points on the surface of earth is known as

Answer» DETERMINING the difference in ELEVATION between two points on the SURFACE of the EARTH is KNOWN as___
Differential levelling.
48.

Importance of solar declination angle in solar water heating

Answer»

In general, the Sun DECLINATION angle, δ, is defined to be that angle made between a ray of the Sun, when EXTENDED to the center of the earth, O, and the EQUATORIAL plane. We take δ to be positively oriented WHENEVER theSun's rays reach O by PASSING through the Northern hemisphere.

49.

A transparent cylinder has its right half polished so as to act as a mirror

Answer»

What is the QUESTION

50.

Which lens show divergent action on light beam

Answer»

Convex lens shoes DIVERGENT action on LIGHT BEAM that is REFLECTION