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 is meant by duty cycle of circuit breaker

Answer»

The duty cycle of a circuitbreaker is the RATIO of two TIME periods. It is defined as the ratio of thetime period when the CIRCUIT breaker is in ON mode to the total time period.This can be symbolically represented as:


                                                D= TON/( Ton + Toff)

 

where


D = duty cycle


Ton = time period inON state


Toff = time period in OFF state
2.

How does Newton's second law of motion differ from first law of motion?

Answer»

Newton's First Law of Motion states that a body at rest will remain at rest unless an outside force acts on it, and a body in motion at a constant velocity will remain in motion in a straight line unless acted upon by an outside force.

If a body EXPERIENCES an acceleration ( or deceleration) or a change in direction of motion, it must have an outside force acting on it. Outside forces are sometimes called net forces or unbalanced forces.

The property that a body has that resists motion if at rest, or resists speeding or slowing up, if in motion, is called inertia. Inertia is proportional to a body's mass, or the amount of matter that a body has. The more mass a body has, the more inertia it has.

The Second Law of Motion states that if an unbalanced force acts on a body, that body will experience acceleration ( or deceleration), that is, a change of SPEED. One can say that a body at rest is considered to have zero speed, ( a constant speed). So any force that causes a body to move is an unbalanced force. ALSO, any force, such as friction, or gravity, that causes a body to slow down or speed up, is an unbalanced force. This law can be shown by the following formula

F= maF is the unbalanced forcem is the object's massa is the acceleration that the force causes

If the units of force are in newtons, then the units of mass are kilograms and the units of acceleration are m/s2. If the units of force are in pounds (ENGLISH), then the units of mass are in slugs, and the units of acceleration are ft/s2.

Motion of an object that is not accelerated (moving at a constant speed and in a straight line) can be found using the formula

d= v t


d is the distance traveledv is the rate of motion (velocity)t is the TIME
3.

Explain why gases expand more than solids or liquids do??

Answer»

Have you STUDIED that in your 6 or 7 class that solid molecule are packed with each other very tightly and LIQUID have some gap between each molecule and gases are very FREELY molecule that can easily settle anywhere and can change its shape easily ..,
that's why the gases are EXPAND more than solid and liquid ..


thank you

4.

What is the function of press plunger and pump plunger ?

Answer»

The answer is In a pump, the function is REVERSED and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. ... A PLUNGER pump is a type of positive displacement pump where the high-pressure SEAL is STATIONARY and a smooth cylindrical plunger slides through the seal.

5.

Find the final temperature of the mixture(find the formula)

Answer» Calculate the final temperature of the water MIXTURE USING the equation T(final) = (m1_T1 + m2_T2) / (m1 + m2), where m1 and m2 are the weights of the water in the first and second containers, T1 is the temperature of the water in the first container and T2 is the temperature of the water in the second container. For example, assume that you mix 50 ml of water at 20 degrees Celsius with 20 ml of water at 85 degrees Celsius and the density of water is 1 g/ml. FIND the weights of the two water samples by multiplying the two volumes by the density of water, volume 1 * 1 g/ml = 50 g and volume 2 * 1 g/ml = 20 g. These values should match the weigh measurements that you made. If they are different, USE the weight measurements you recorded. Insert the values you recorded earlier into the equation and find the final temperature of the mixed water, T(final) = (50 g * 20 degrees + 20 g * 85 degrees) / (50 g + 20 g). Evaluate the equation to get T(final) = (1,000 + 1,700) / 70 = 2,700 / 70 = 38.57 degrees.
6.

Find operating points of the non-lenear resistor

Answer»

A simple model that describes dc (large-signal) behavior [14] of a bipolar junction transistor (BJT)
is the Ebers-Moll model [11]. The model has been used in a number of analytical studies. Field-
effect transistors (FETs) do not possess such a simple, mathematically tractable, large-signal model.
Nonetheless, many of the theoretical results related to BJT circuits have been extended to include
circuits with FETs [67].
Two important albeit simple attributes of BJT and FET transistors are their “passivity” [17] and
“no-gain” [66] PROPERTIES. These properties have proved instrumental in establishing theoretical results
dealing with dc OPERATING points as well as in DESIGNING algorithms for solving equations describing
transistor circuits [53]. When considering their dc behavior, transistors are passive devices, which
implies that at any dc operating POINT the net power delivered to the device is nonnegative. They are
also no-gain and, hence, are incapable of producing voltage or current gains. Subsequently, passivity
is a consequence of the no-gain property.
By using the Ebers-Moll transistor model, the large-signal dc behavior of an arbitrary circuit
containing n/2 bipolar transistors may be described with an equation of the form
QT F(v) + P v + c = 0. (1)
The real n × n matrices P and Q and the real n-vector c, where
P v + Qi + c = 0, (2)
describe the linear multiport that connects the nonlinear transistors. The real matrix T, a block
diagonal matrix with 2 × 2 diagonal blocks of the form
Ti =
-
1 −αi+1
−αi 1

, (3)
and
F(v) ≡ (f1(v1),...,fn(vn))T (4)
capture the presence of the nonlinear elements. The controlled-source current-gains αk, k = 1, 2, lie
within the open interval (0, 1). The FUNCTIONS fk: R1 → R1 are continuous and strictly monotone
increasing. Typically,
i = fk(v) ≡ mk(enkv − 1), (5)
where the real numbers mk, nk are positive when modeling a pnp transistor and negative for an npn
transistor. They satisfy the reciprocity condition:
miαi = mi+1αi+1, for i odd. (6)
The nonlinear elements are described via the equation
i = T F(v). (7)
Hence,
AF(v) + Bv + c = 0, (8)
where A = QT and B = P. This equation represents a general description of an arbitrary nonlinear
transistor circuit. Its solutions are the circuit’s dc operating points.
The determinant det(AD + B) is the Jacobian of the mapping AF(v) + Bv + c evaluated at the
point v, where
D = diag(d1, d2,...,dn), (9)
288

7.

What type of belts used in helicopter seat belt

Answer» HARNESS TYPE SEAT BELT FOR HELICOPTERS 5 ATTACHMENT POINTS FOR CREWS
8.

HOW TO DECREASE THE SIZE OF A PIC TO DESIRED KBS

Answer» SCAN the PICTURE through SCANNER to DECRESE the size of pic to desired kbs
9.

Centripetal force vs centrifugal force slide share

Answer» HELLO FRIEND ..... ☺
Centripetal force is defined as, “The component of force acting on a body in CURVILINEAR motion that is DIRECTED toward the center of curvature or axis of rotation,” while centrifugal force is defined as, “The apparent force, equal and opposite to the centripetal force, DRAWING a rotating body away from the center of center of curvature or axis of rotation.
10.

How to calculate single phase power factor in simulink

Answer»

Ever used a british stop watch, the ancient one with the needles. Well then its easy to know the zero error. Now IMAGINE the initial reading on the watch is 0 and after you start it and stop it the reading is 3 sec. Well then its easy to say that it worked for 3 seconds.

Now the similar CASE when the initial reading was between 0 and 1 sec say some 0.5 sec and final reading is 3.5 sec. Then in that case the time elapsed will be the difference between them. Thus to modify and ease CALCULATIONS we need to put the initial value to 0. This PROCESS is called zero CORRECTION.

And the initial reading you found out was the zero error. Now why we need this. This is because for small its not difficult to that extent but when operating with more accurate devices viz. Screw gauge, vernier callipers, pressure gauge. The differences require a bit of calculations to be done.

Hence there you are. To do zero correction of zero error to get your values strainght without lot of calculations and effort.

Hope it helps.

11.

The static charge of 2C is placed in a magnetic field of 2T.what is the value of force ..

Answer»

There is no MAGNETIC FORCE on STATIC CHARGES.

12.

Give one example where expansion on heating is put to good use

Answer»

Like in geothermal energy , In thermal power plants . OCEAN thermal power plant and so on

this all power plants will work on the EXPANSION of AIR and this EXPANDED air will pass through a pipe to the blades of FAN for generation of electricity ...

13.

Production of cathode rays conducted by goldstein

Answer»

Goldstein CONDUCTED the experiment in a perforated tube where he found that after cathode RAYS some rays also travels from POSITIVE to NEGATIVE which he called canal rays or anode rays which led to discovery of proton.
if u want more DETAIL than msg me.
hope this much helps.
plz mark as brainliest

14.

A hole in a steel casting is to be bored using a carbide insert. The hole is 130mm diameter in the

Answer» COMPLETE your QUESTION
15.

Formula of kinetic energyrotation in vertical circle

Answer»

According to me it should be as The formula for rotational KE (

12Iω212Iω2) is DERIVED by ADDING up the KE of each particle in a rigid BODY in pure rotation. When body has both rotation and translation, we can DERIVE that:

KE=KER+KET=12Icomω2com+12mv2comKE=KER+KET=12Icomωcom2+12mvcom2

In this case, the point particle has no ωω about its center of mass, so no problem. Though we can STILL apply the pure rotation formula.

16.

How to calculate no of beats in tuning fork?

Answer»

By STATIONARY the TUNNING FORK.

17.

Find dy\dx,when y=√x-1\√x

Answer» HI...☺

Here is your ANSWER...✌

y =  \frac{ \sqrt{x}  - 1}{ \sqrt{x} }  \\  \\ y =  \frac{ \sqrt{x} }{ \sqrt{x} }  -  \frac{1}{ \sqrt{x} }  \\  \\ y = 1 -  \frac{1}{ \sqrt{x} }  \\  \\ differentiating \: both \: sides \: w.r.t. \: x \\ we \:get \\  \\  \frac{dy}{dx}  =  \frac{d}{dx}(1) -  \frac{d}{dx} ( \frac{1}{ \sqrt{x} } ) \\  \\  = 0 -  \frac{d}{dx} ( {x}^{ \frac{ - 1}{2} } ) \\  \\  =  - ( -  \frac{1}{2}   \: {x}^{(\frac{ - 1}{2}  - 1)} ) \\  \\  =  \frac{1}{2 }  \:  {x}^{ (\frac{ - 3}{2}) }   \\  \\  =  \frac{1}{2  \: {x}^{ \frac{3}{2} } }  \:  \:  \:  \:  \:  \:  \: ( \: or \:  \frac{1}{2 \sqrt{ {x}^{3} } } \:  )
18.

a boy leaves his home and goes on a car , returning to his home after travelling 20 km in half . what is his average displacement

Answer»

0 he returned to his actual POSITION so DISPLACEMENT WOULD be ABSOLUTELY zero

19.

Limit of proportionality depends upon explain

Answer» HELLO dear friend,
The answer to your question is :
The limit of PROPORTIONALITY depends UPON the type of material used .
Actually it can be understood by the HOOKE's LAW..


Hope this helps..thankyou! & goodluck!
20.

Reflector combined with autocollimator can measure

Answer»

Reflectors and Auto-collimators are Optical Instruments that are used for Angular Measurement in Metrology.

The autocollimator helps in MEASURING the deviation in between the emitted beam and the reflected beam. There are 2 images that are produced in the auto-collimator and their separation is used for directly READING the angular error. When there is a REFLECTOR, a small of light gets reflected which ALSO helps in detecting the angular MEASUREMENTS.

21.

Which is more efficient two stroke or four stroke engine

Answer»

This fuel EFFICIENCY in 2 stroke ENGINE is LESS. But compared to mechanicalefficiency, a 2 stroke petrol engine had higher MECHANICAL efficiency because it gives a power stroke for one complete revolution of crankshaft, but the 4 stroke engine gives a power stroke for 2 complete rotations of crankshaft.

22.

Why does internal energy only depend on temperature

Answer»

The internal ENERGY only DEPEND on TEMPERATURE because there is a PART of POTENTIAL energy

23.

How many nutrons and protins ar in mg 12 24?

Answer»

No. of neutron=12 and no of PROTON =12

24.

Why does a clinical thermometer have a kink in its stem??

Answer»

It has a kink in its SYSTEM ro prevent the blackflow of the mercury in the thermometer . If the kink WOULD not be there then it will cause a lot of destruction of the thermometer and it is dangerous.
Hope it HELPS you.
PLEASE mark as brainliest.

25.

a scooter moving at a speed of 10m/s is stopped by applying brakes which produce a uniform acceleration of, -0.5m/s square. how much distance will be covered by the scooter before it stops?

Answer»

V=10m s
u=0
a=0.5m s2
s=?
v2-u2=2as
100-0=2×0.5×s
100=1*s
s=100m

26.

Why does a clinical thermometer have a king in its stem

Answer»

So that the MERCURY PRESENT in it does not FLOWS back.

Hope it HELPS you.

27.

If the mobile phone charger is on and no mobile is connected to it so electricity will flow or not

Answer»

No. It will not FLOW OUTSIDE and only UPTO END of the CHARGER

28.

How much energy is given to each coulomb of charge passing through a 6 v battery

Answer»

Fishing flight khulegi highly recommend that you can get a good time to do it for you to the RIGHT now I can get a new ONE and only if you want to do the same as LAST year and I will

29.

Will normal water temperature be 33 degree celsius

Answer»

No FREIND MAY be it is 4 DEGREE CELSIUS

30.

How much time on earth is passed if u travel in spacecraft at speed of light for one year

Answer»

For you the TIME will be stoped and as you are saying that you are travelling for one year then obviously time PASSED on EARTH will be one year.

31.

Plastic bag extrusion manufacturing Process flow chart

Answer» HOPE this helps u..

Please MARK the answer as BRAINLIEST if you like it
32.

How to identify convex and concave functions?

Answer» PLS MARK me as BRAINLIEST
33.

How is the intensity of magnetic field around a solenoid going to change if the magnitude of current in it is increased?

Answer»

Hdjsjsjjsbshdhsmakahamam

34.

E=p2/2m check the accuracy

Answer» LET E and p are kinetic energy and the MOMENTUM of the body respectively.
p=mv

E=1/mv²=1/2mv²*m/m=1/2*(mv²)/m

E=p²/2m



This is the RELATION between the K.E. and the momentum of a body. 

35.

When the main switch of the house is put off it disconnects the

Answer»

It DISCONNECTS the CIRCUIT and MAKE all appliances stopped from WORKING ..

36.

What is meant by saying that the potential difference between two points is 1 v

Answer»

Answer:

When 1 Joule of WORK is done to move a charge of amount 1 COULOMB from one place to ANOTHER, then it is said that the potential difference between the two points is 1 VOLT (V).

37.

Why we should not place a fuse wire over a neutral wire

Answer»

In electrical CIRCUITS, fuses are used as a protective device to prevent the circuit from an excess CURRENT flow. An excess current flow can cause due to many reasons such as short circuit, OVERLOAD, etc.

In an electrical system, the fuses are selected based on the power ratings, based on the MAXIMUM safe limit of current allowable to flow through the circuit. So, whenever the current flow through the fuse rise beyond its limit, the fuse will burn out and opens the circuit.



hope it helps u PLEASE mark as brainlist if u satisfied with the answer

38.

A dog initially running at a speed of 2 m\s accelerate at a rate of 1.5 for 5s find velocity

Answer»

A=v-u/t
1.5=v-2/5
1.5*5=v-2
7.5=v-2
v=7.5+2
v=9.5m/s
hope it MAY HELP you MATE

39.

A man travell 45÷4 km and time taken is 3 hour find his average velocity

Answer» AVERAGE velocity=TOTAL DISTANCE /total time
total distance=11.25 km
=11250
total time=60*60*3=10800
therefore
11250/10800=1.04m/s
40.

Tell me something about integration differentiation and calculus

Answer»

Differential CALCULUS deals with the concept of TAKINGderivative also called DIFFERENTIATION. This means take really SMALL parts of a line to find the slope of a curve at every point. INTEGRAL Calculus deals with taking the Integral of a curve also called integrating.

41.

In this figure find resistance between CD and AB

Answer» HOPE it HELPS u
Thanks
PLEASE INFORM me if I am WRONG.
42.

Difference between enhancement and depletion mode mosfet

Answer»

In most circuits, this MEANS pulling anenhancement-mode MOSFET's GATE voltage towards its drain voltage TURNS it ON. In a depletion-mode MOSFET, the device is normally ON at zero gate–source voltage. Such devices are USED as load "resistors" in logic circuits (in depletion-load NMOS logic, for example).

43.

To verify law of resistance in series and parallel connection

Answer» SORRY to SAY but I don't know the answer for this question I am very very very very very sorry for the INCONVENIENCE CAUSED
44.

How do the northern mountains cause rainfall in our country?

Answer» NORTHERN MOUNTAINS play a very important role in the monsoon They TURN the monsoon winds to the INDIAN Plains which causes RAINFALL
45.

The unit of coefficient of viscosity in s i system is

Answer»

Both the physical unit of dynamic viscosity in SI units, the poiseuille(Pl), and cgs units, the poise (P), are named after Jean Léonard Marie Poiseuille. The poiseuille, which is rarely used, is EQUIVALENT to thepascal SECOND (Pa. s), or (N. s)/m2, or KG/(m.


hope it helps u please mark as brainlist if u SATISFIED with the answer

46.

How are temperature and hotness of a body related?

Answer»

Often we think that heat and temperatureare the same thing. ... Heat andtemperature are RELATED to each other, but are different CONCEPTS. Heat is the total energy of molecular MOTION in a substance while temperature is a MEASURE of the average energy of molecular motion in a substance.

i hope it will help u..

47.

Why does temperature increase with altitude in the stratosphere

Answer»

Because all HOT GARDEN go UPSIDE of the EARTH layer that is the reason

48.

rk bansal A long 5-cm-diameter steam pipe passes through some area open to the wind. Determine the drag force acting on the pipe per unit of its length when the air is at 1 atm and 10o C and the wind is blowing across the pipe at a speed of 50 km/h.

Answer»

Take ROW LENGTH by area

Si ANSWER is 5*10^-2

49.

How to calculate focal length from radius of curvature

Answer» FOCAL LENGTH is ALWAYS
f=1/2 of RADIUS
so you can CALCULATE it.
50.

Estimate Inductor Losses Easily in Power Supply Designs

Answer»

Estimate Inductor Losses Easily in Power Supply Designs

Inductor Basics. An inductor consists of wire WOUND around a core of ferrite MATERIAL that includes an air gap. ...

Inductor Operation. The power inductor in a BUCK or boost converter operates as follows. ...

Power Loss in the Inductor Core. ...

Power Loss in Inductor Windings. ...

References.