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.

What battery is required to run a 230w peltier module

Answer» 12V , 20AH BATTERY is ENOUGH for a 230W peltier MODULE
2.

Why arc resistance affects function of directional relay

Answer»

Because the mho relay is affected by arc resistance more than any other type, it is applied to longer LINES. The fact that it COMBINES both the directional and the DISTANCE- measuringfunctions in one unit with one contact makes it very reliable









please mark brainlist and follow me

3.

An air bubbles in Water will acts as1)concave mirror 2)concave lens3)convex mirror 4)convex lens

Answer» CONVEX MIRROR i HOPE...

it's NT CORRECT
4.

In order to obtain a magnification of minus2 with a convave mirror, the object should be placed at?

Answer»

Bahut durn ray is coming rays becauss LIGHT speed is very fas 3.2×100000000 is light distance formola
speed/time
speed is not GIVEN
s/2=distance
diatance=x
s=2x
the distance = 2x/2 is ANSWE

5.

A body cover 20 kilometre with a speed of 40 km/hand next 20 km with a speed of 30 km per hour calculate average speed

Answer» A body cover 20 kilometre with a speed of 40 km/h
time taken, t
₁ = 20/40 = 1/2 h 

It covered NEXT 20 km with a speed of 30 km/h
time taken, t₂ = 20/30 = 2/3 h

total time taken = t₁ + t₂ = 1/2 + 2/3 = (3+4)/6 = 7/6 h
total distance traveled = 20+20 = 40km

AVERAGE speed = total distance/total time
⇒ average speed = 40/(7/6) = 40×6/7
⇒ average speed = 240/7 km/h = 34.28 km/h

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Another shortcut:
You see that it travels 20km each time with different speed. When distance travelled each time is same and it travels at speed x and y, average speed can be calculated as:

average speed = 2XY/(x+y)

using this, average speed = 2×30×40/(30+40) = 34.28 km/h
6.

How to solve it ...please explain each step

Answer» HEY its very simeple USE SEXY THEOREM .
7.

I have got a project on newtons law what I should write in analysis of that

Answer»

For the project work write these POINTS in order:-

define Newton ( human)

his contribution

how he got idea


then write all the LAWS


define


it's uses


and CONCLUSION

8.

A body covers 20km with a speed of 40km/h and next 20 km with a speed of 30km/h .Calclate average speed

Answer»

Speed=40 KMH ;30kmh
distance= 20KM ;20km
time=d/s= 40+30/20+20
=70/40=1.75kmh

9.

Inertia is that property of a body by virtue of which the body is

Answer»

In MOTION................ INERTIA is the PROPERTY of a BODY by the VIRTUE of which the body is in motion

10.

Inductance in quadrature and ditect axis

Answer»

The direct-axis and quadrature-axis inductances of synchronous RELUCTANCE motors (SynRM) are known to VARY with the current, caused by magnetic saturation of the iron CORE. In flux-barrier SynRMs, both the direct-axis and quadrature-axis magnetic fluxes pass in part through the SURFACE of the rotor core.

11.

A cyclist traveld 100m in 20sec what is his average speed

Answer» SPEED = distance/time

= 100/20= 5m/s

therefore the AVERAGE speed is ALSO 5m/s.
12.

What are super conductor?

Answer» SUBSTANCE CAPABLE of BECOMING superconducting as sufficiently low temperatures are superconductors ...
13.

A car is moving in a straight line with speed 18 km/h . It is stopped in 5s by applying breaks . Find the speed of car after 2 s of applying the brakes (in m/s).

Answer» HEY DUDE UR ANSWER is here
14.

What is unsteady state heat transfer ? Explain with a suitable example

Answer»

Heat transfer is the transfer of thermal energy from a body, at a high temperature, to another at a lower temperature.    This transfer of thermal energy may occur under STEADY or unsteady state CONDITIONS.  Under Steady state conditions the temperature within the system does not change with time.  Conversely, under unsteady state conditions the temperature within the system does vary with time. 

 Unsteady state conditions are a precursor to steady state conditions.  No system exists initially under steady state conditions.  Some time must pass, after heat transfer is INITIATED, before the system reaches steady state.  During that PERIOD of transition the system is under unsteady state conditions.

 Clearly, no system can remain under unsteady state conditions perpetually.  The temperature of the system will eventually reach the temperature of the heat SOURCE, and once this happens, the system will be at steady state.  Even if the amount of heat being transferred into the system is increased, at some point the system reaches its critical temperature and the energy transferred into it the starts causing phase changes within the system rather than temperatures increases. 


15.

Why dc series motor should never be started on no load

Answer»

This can be seen from the speed-armature CURRENT and the speed-torque characteristics that on low armature current and low torque condition motorshows a tendency to rotate with dangerously HIGH speed. This is the reason why series motor should never be STARTED on LIGHT loads or no loadconditions.

16.

What is the utility of carry look ahead scheme over the ripple carry scheme

Answer»

A SYSTEM of ripple-carry adders is a sequence of standard full adders that makes it possible to add numbers that contain more bits than that of a single full adder. Each full adder has a carryin (Cin) and a carryout (Cout) bit, and the adders are connected by connecting Cout on step k to Cin on step k+1 (Cin on step 0 is C0 in the picture, Cout on step 3 is C4 in the picture)



The challenge with ripple-carry adders, is the propagation delay of the carry bits. Assume that, in an instant the values of A and B change, such that

A1 = 0 B1 = 1 A0 = 1 B0 = 1

Since A0 and B0 are high, the first full adder will produce a carry, i. e. C1 = 1. However, it takes some time for the logic to settle down, so C1 doesn't change until a little after A1 and B1 changed. Thus, before C1 shows up, the second full adder does not produce a carry, but as C1 shows up, the second adder will recompute and produce a carry, i. e. C2 = 1. In the worst case, C4 is not correctly computed until 4*propagation delay, and Cn is not computed until n*propagation delay.

A carry-lookahead adder system solves this problem, by computing whether a carry will be generated before it actually computes the SUM. There are multiple SCHEMES of doing this, so there is no "one" circuit that constitutes a look-ahead adder. The idea is something like this:



The calculation of C4 is no faster than in the the ripple-carry above, nor is PG and GG - the magic only happens when you put several of these blocks together to add even larger numbers.

The important to note part of the picture, is that the purple block is producing three values: C4, PG (Propagate) and GG (Generate). PG goes high if this block will propagate Cin to Cout, and GG goes high if the block will generate an overflow regardless of Cin. (Also, the block may neither propegate nor generate a carry, in which case both PG and GG are low, and Cout is 0.) PG and GG can be calculated in the purple block regardless of the value of C0 - thus, when C0 finally arrives, the purple block can SIMPLY CONSULT its previously calculated result, and if the result is a "propagate," then C0 is propagated directly to C4; this is four times faster than propagating through all the four full adders.

The reason why the block has the outputs PG and GG is so that, in a hierarchal fashion, we can acquire even greater propagation speedups.

17.

A permanent magnet [MP PET 1996]A) Attracts all substances B) Attracts only magnetic substances C) Attracts magnetic substances and repels all non-magnetic substances D) Attracts non-magnetic substances and repels magnetic substances

Answer»

The CORRECT ANSWER is B

18.

An electrostatic field line is a continuous curve. That is. A field lines cannot have sudden breaks .why not?

Answer»

Heya......
_____________________________________________________________

QUESTION:- an ELECTROSTATIC field line is a continuous curve . That is A field lines cannot have sudden BREAKS . Why not ?


ANSWER;- the tangent at any point on the electric field line GIVES the direction of field at that point.so the electric field line is generally curved , they are continuous curves and cannot have sudden BREAK .a sudden break will indicate the absence of electric field at that point

_____________________________________________________________

HOPE it helps
============

19.

What is the difference between the value of G and g in physics

Answer»

Hey bddy HERR is UR ANSWER....
G is '' UNIVERSAL gravitational constant'' its value is 6.67*10^-11
g is normal gravity and its value is 9.8
if hlp mark brainliest

20.

A person cannot see distinctly at the distance less than one metre. Calculate the power of the lens that he should use to read a book at a distance of 25 Cm

Answer» POWER= 1/f ( focal length in METRE)
Focal length here=25cm
=0.25m
1/0.25= 100/25
=4( By USING sexy THEOREM)
21.

What is POTENTIAL transformer and potential transformer

Answer»

Voltage transform is also called POTENTIAL transform are parallel connected TYPE of instrument transformer USED for the transformation voltage from high to LOW VALUE..............
I hope it's help u....
THANKS

22.

The dipole moment of a short bar magnet is 1.25 A-m2. The magnetic field on its axis at a distance of 0.5metre from the centre of the magnet isA) 1.0\times {{10}^{-4}}Newton/amp-meter B) 4\times {{10}^{-2}}Newton/amp-metre C) 2\times {{10}^{-6}}Newton/amp-metre D) 6.64\times {{10}^{-8}}Newton/amp-metre

Answer»

ANSWER:

option (c) is true

Explanation:

These types of problems are MADE on the BASIS of MAGNETIC properties

23.

Find the value of gravitational acceleration in CGS and SI unit

Answer» SI - 9.81 m/sec**2

CGS - 981 cm/sec**2

The VALUES are (also know as gravitational CONSTANT) at the SEA level, which drops at higher altitude.

24.

Give two example from your daily life where

Answer» PLEASE COMPLETE your QUESTION
25.

A silver wire has a diameter of 0.4 mm and resistivity 1.6×10^-8 ohm metre. How much length of the wire is required to make a 1 ohm coil?

Answer»

Resistance= 1ohm
RESISTIVITY=1.6 * 10-8
DIAMETER=0.4mm
. . . Radius=0.4/2=0.2mm = 0.2/1000 m = 0.2 * 10-3
         (R)2=(0.2 * 10-3)2
        R2=0.04 * 10-6
AREA= PIE * R2=22/7  * 0.04*10-6  
                      = 1.25714286 * 10-6
                       = 1.26 * 10-6 m2
NOW Resistance = resistivity * length / area
              LENGTH= RESISTANCE * AREA / RESISTIVITY
            LENGTH=1 * 1.26 * 10-6 /1.6 * 10-8
                           = 126 * 108 *10/16 * 100 * 106
                          =1260/16
           LENGTH = 78.75 m

26.

A ball is moving along x-axis A quantity is measured to be - 20 m per second is it speed or velocity give a reason for your answer

Answer»

ANSWER
_________________________________________

Since the ball is moving is moving "only" in x-axis, We can CLEARLY conclude that the Ball is moving in a SINGLE direction i.e. it is having RECTILINEAR MOTION.

So, the QUANTITY MEASURED can be both velocity or speed bcoz in rectilinear motion speed and velocity are exactly same.

_______________________________________________

HOPE IT HELPS :):):):):

27.

Derive and expression for adiabatic lapse rate

Answer»

When the air contains LITTLE WATER, this lapse rate is KNOWN as the dry adiabatic lapse rate: the rate of temperature DECREASE is 9.8 °C/km (5.38 °F per 1,000 ft) (3.0 °C/1,000 ft). The REVERSE occurs for a sinking parcel of air.

28.

What is moisture lock technology in refrigerators

Answer» NEW TMF REFRIGERATOR is MOISTURE TECHNOLOGY refrigerator.
29.

Force on a current carrying conductor in a magnetic field by byju

Answer»

Did U WANT the formula
F= BIL SIN0

30.

Grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is

Answer»

The answer is surface GRINDER.


The grinder used for grinding irregular, CURVED, TAPERED, convex and concave surfaces is a surface grinder. Such a grinder helps in rendering precision ground surfaces to either a critical size or with the required surface finish. The surface wheels of this grinder is usually made of diamond, cubic boron nitride, SILICON carbide or aluminum oxide. The different types of surface grinders are horizontal spindle, vertical spindle, disc and DOUBLE disc.
31.

A magnet of magnetic moment M is rotated through 360? in a magnetic field H, the work done will be [KCET 1998; MP PMT 1994; Roorkee 2000]A) MH B) 2MH C) 2\pi MH D) Zero

Answer»

...........HOPE this HELP

32.

Please answer for this question guys

Answer»

Please IMPROVE your handwriting SORRY but I am giving U advise

33.

Why you are applying for this position and why you should be considered

Answer»

My EXPERIENCE, skills and EDUCATION QUALIFICATION MATCH to this PROFILE so I think I am perfect for this position

34.

If a hole is made at the centre of a bar magnet, then its magnetic moment willA) Increase B) Decrease C) Not change D) None of these

Answer»

It is d) FRIEND NONE of these

35.

Magnetic lines of force [MP PET 1994]A) Always intersect B) Are always closed C) Tend to crowd far away from the poles of magnet D) Do not pass through vacuum

Answer»

Magnetic field LINES always FORM CLOSED loop

36.

A small bar magnet of moment M is placed in a uniform field H. If magnet makes an angle of 30? with field, the torque acting on the magnet is [CPMT 1989]A) MH B) \frac{MH}{2} C) \frac{MH}{3} D) \frac{MH}{4}

Answer» TORQUE is CALCULATED by USING the FORMULAE t=niabcos (THETA)
37.

Length of weld for angle section attached to gusset plate lrfd method example

Answer»

Uffzfuztdfzzktxtfzixtcxoigxittxgdicttdrstcocy LOL KITCHENETTE CITED oycotstd

38.

Why hydrostatic level sensor is called absolute type level sensor

Answer»

A crop SENSOR refers to any sensor smaller than a FULL FRAME sensor or a 35mm film frame. The common types of crop sensor include APS-C and micro 4/3 systems. Aside from the DIFFERENCE in physical SIZE of the sensor, there are several other differences between a crop sensor and a full frame sensor.

39.

Magnetic induction is a [AFMC 1986]A) Scalar quantity B) Vector quantity C) Both (a) and (b) D) None of the above

Answer»

Hello FRIEND...!!

OPTION ' B ' is the correct answer

• magnetic induction is a vector quantity.

ELECTROMAGNETIC induction is the process in which an induced current is generated due to variation in the magnetic field.

__________________________

HOPE it helps...!!!

40.

0.7821 multiplying by 8.345 divided by [3.025]1/3

Answer» HI this is CHAITHANYA I will explain MATHS doubts CLEARLY
41.

782.5 multiplying by 83.79 divided by 1.002

Answer» HOPE this HELPS!!!......
42.

How to find calculate the molecular mass of mg(no3)2?

Answer» MG (NO3)2 =
24 + ( 14+ 16×3) 2 = 24 + (62 × 2)
=24 + 124 = 148 u (approx.)
43.

How to fill holes in metal without welding?

Answer» WITHOUT WELDING we will PUT more METAL INSIDE
44.

Describe mechanical force

Answer»

Heya
here's your answer...
mechanical force is nothing but force EXERTED by simple objects LIKE a lemon SQUEEZER,etc.
hope it HELPS...

45.

Solve this ques as soon as possible

Answer» OPTION 3 is the answer
I HOPE it will HELP u
46.

How to find degeneracy of hormonic oscillator

Answer»

The FORMULA is
G=(n+p-1)/(p-1)

47.

Explain quantum no cloning theorem. how is it important to quantum cryptography?

Answer»

In physics, the no-cloning THEOREM states that is impossible to create an identical COPY of an arbitrary unknown quantum state....It has profound implications in quantum computing and related FIELDS .The state of ONE system can be entangled with the state of another system.

48.

According to Hooke's law the force required to change the length of a wire by 'l' is proportional to

Answer»

Length proportional to the FORCE......

HOOKE's LAW : F = KX

49.

Why power factor of semi converter is better than full converter

Answer»

An a.c. electrical system has a CHARACTERISTIC line voltage or phase voltage.  For example, in your home or office, the phase voltage is 115 volts a.c.; in a factory, the line voltage (as for instance to run a PUMP motor) is usually 460 volts a.c.; and so on.  Some power is "single-phase," some is "three phase," and the line and phase voltages are usually differ from ONE another in any case; but your question REGARDS power factors, a matter which does not in and of itself require a discussion of lines, phases and such, so we'll speak no further of those here.

HOPE THIS ANSWER MAY HELPS YOU.!!

50.

Difference bulk density and apparent density refractory materials

Answer»

Apparent density - the mass per unit volume of the PARTICLES in a granular material, excluding the VOIDS in the material. Like crushed rock, for instance. USUALLY obtained by boiling water 
BULK density - the mass per unit volume of a bulk of a material, including the air voids between the particles, and inside the particles. Like the mass of a CUBIC of crushed rock.