Draw the diagram of two fiber UPSR and explain how it is useful in stand by mode of continuous fiber optic communication

 

Block Diagram of Two fiber UPSR









The full form of UPSR is Two Fiber Unidirectional Path Switched Ring (UPSR).
Normally the working of traffic travels clockwise around the ring on primary path.

Connection from Node 1 to Node 3 links 1 & 2.
Traffic clockwise path is the protection path, if the link or Node fails, protection path (Link 5 to 8) is indicated by dashed lines.

To achieve protection, signals from a transmitting Node is a dual fed into both primary and protection fiber.

In case of failure of fiber optic communication, how does four fiber BLSR help. Explain with neat diagram

 

The full form of BLSR is Bidirectional Line Switched Ring.
Two primary fiber loops (1p to 8p) are used for normal bidirectional communication.
And other two secondary fiber loops are stand by links for protection purposes (1s to 8s).

Lets consider, the connection between Node 1 and Node 3 then traffic from Node 1 to Node 3 flow in clockwise direction links 1p & 2p.
In return path, traffic flow counter clockwise from Node 3 to Node 1 along links 7p & 8p.
If a transmitter or receiver circuit card fails, then the affected Node detects a loss of signal condition.
And switches both primary fiber connecting Nodes to secondary protection pair.

So in that condition four fiber bidirectional line switched ring is very useful and helpful.

Explain the operation of line interactive UPS with the help of neat block diagram

Line Interactive UPS

 Operation Mode 1:- → When mains is ON, static switch is closed.

                                                  Load get connected directly to the AC mains through inductance (L).

                                    

                                        → Inverter cum charger blocks operates as charger a battery bank.

Operation Mode 2:- → When mains is OFF (fails) static switch is open.

                       → Inverter cum charger and battery supplies power to load through inverter.                                                            

The sum of 5 by 14 and 4 by 8​

 Solution:- 

(23.8 – 2.49) x (4 x0.15)

 Question :- (23.8 – 2.49) x (4 x0.15)

         =  (21.31) x (0.6)

         =   (12.786)  Ans.

Subtract 3ab from 10ab

 1) 7ab

2) 13ab

3) -7ab

Ans:- 7ab

Here we have to subtract 3ab from 10ab, it means that 

10ab - 3ab = 7ab

Who is the richest person in entire Asian Country?

 a). Jeff Bezos

b). Mukesh Ambanic). Bill Gatesd). Ratan Tata​Ans:- b) Mukesh Ambani

Study the following frequency distributing table and answer the questions given below. Frequency Distribution of Weight of 70 persons (in kg)

 

(i) What is the size of the class intervals?

Ans:- 45 - 40 = 5

(ii) Which class has the highest frequency?

Ans:- 4th class has the highest frequency.

(iii) How many persons weigh less than 50 kg?

Ans:- 20 persons

(iv) Which two classes have the same frequency?

Ans:- 1st and 5th class have the same frequency.

Which part is famous for which animals?

 1) Kangaroo is very famous and mostly found in Australia.

2) Lion is very famous and mostly found in part of south Africa in        Sahara desert.

3) Chimpanzee are famous and mostly found in central to western         Africa.

4) Giraffe is very famous and mostly found in East Africa.

5) Zebra are very famous and mostly famous in Eastern and                    Southern Africa.

6) Cheetas is a large cat is mostly found in Africa and Iran.

7) Gorillas is mostly lives in West Africa.

8) Deer is very famous in India and they found throughout of India.

9) Black Panther very famous in south and southeast Asia.

10) Cow is very famous in India.

Table of 10 types of animals in marine water park

 1) Vaquita

2) Whale shark

3) Florida manatee

4) Blue Whale

5) Dolphin

6) Hawksbill sea turtle

7) Galapagos penguin

8) Hawaiian monk seal

9) Kemps Ridley sea turtle

10) Sea Otter

What will happen if we shift the camel from the desert to the polar region ?

Camel is the only domestic animal that can easily survive in desert area. 

But in case, if you shift your camel in the polar region means cold region area, they are not much comfortable to survive in this area as they can survive in desert area.

So here in your mind one question is come, why camel cannot survive in cold area region ?

So first of all you need to know that, all living being on earth is different different living nature and environment, according to their living nature of their body.

Biologically camel not have any type of insulation to prevent body heat from releasing.

But in polar region animals have insulation to prevent body heat from releasing.

So therefore, if we want to shift our camel in polar region, so it is proved very risky for camel heat.

Find the square root of each of the following correct to three decimal places. (i) 2.5 (ii) 0.036 (iii) 6.4 (iv) 0.100

 i) Square root of 2.5 =  1.581

ii) Square root of 0.036 =  0.189

iii) Square root of 6.4 =  2.529

iv) Square root of 0.100 =  0.316

10 animals from from the phylum coelenterata

 1) Hydra

2) Jelly fish

3) Maendrina

4) Sea Anemone

5) Physalia

6) Coral

7) Aurelia

8) Adamsia

9) Portuguese-man of war

10) Phylum cnidaria

Define Radius of gyration, SI unit, Dimension

Define:- The radius of gyration defined as, the whole mass of the body                is supposed to be concentrated, so as to possess the same                       moment of inertia as that of body about the same axis is                       called as radius of gyration.

SI Unit:- m (metre)

CGS Unit:- cm (centimetre)

Dimension:- [M° L1 T°]

Control system MCQ (P-19 Pattern)

1) .............Systems converts linear displacement into digitally coded signal.

    Servo motor

    Synchros

    Rotary Encoder

    All of the above

   Ans:- Rotary Encoder

2) On-Off controller is called as.........

    One positional control

    Two positional control

    Four positional control

    Half positional control

   Ans:- Two positional control

3) The On-Off controller is a.............system.

    Digital

    Discontinuous

    Non-linear

    linear

  Ans:- Discontinuous

4) Servo systems components are........

    Servo motor

    Stepper motor

    Synchros

    All of the above

   Ans:- All of the above

5) .............is an essential feature of servo-mechanism.

A power amplifying stage

A closed loop system

Ability to control position, velocity or acceleration of the system

All of the above

Ans:- All of the above

6) A synchro transmitter receiver unit is a...........

Two phase AC device

Three phase AC device

DC device

Single phase AC device

Ans:- Single phase AC device

State whether true or false

 1) Two lines perpendicular to the same line are              perpendicular to the each other.

    Ans:- False

2) If sum of two adjacent angle is 45°, then two            adjacent angles are acute angles.

    Ans:- True

3) Sum of all the exterior angles of any polygon        is always 360°.

    Ans:- True

4) Object which are exact copies of one another are     called plane objects.

    Ans:- False

5) To examine the congruence of plane figures, the     suspension method is used.

    Ans:- True

Factorise this sum (X3 - 2X2 - X + 2) ÷ (X - 2)

 Solution:-

The motion of a car is represented by the graph given here .It is a velocity-time graph

(1) Identify the type of motion from the following

(A) car is not in motion
(B) car is moving with uniform velocity
(C) car is moving with uniform acceleration
(D) None of the above

Ans:- (B) car is moving with uniform velocity

(2) What does the slope of the graph represent?(A) acceleration
(B) velocity
(C) force
(D) momentum

Ans:- (B) velocity

(3) What kind of graph do we obtain if we plot position - time graph of the car(A) Straight line parallel to X axis
(B) Straight line parallel to Y axis
(C) parabola
(D) Zig Zag curve

Ans:- Zig Zag curve

(4) What quantity do we obtain if we calculate area under the given graph?(A)displacement(B) velocity(C) acceleration(D) None of the above

Ans:- velocity

(5) From the graph, the acceleration of the car will be(A) 4m/s(B) 4m(C) 4m/s2(D) zero

Ans:- (C) 4m/s2

​Find the value of p for which the points are colinear if (7,-2),(5,1),(3,p)

 Solution:-

Find the value of p for which the points are colinear if (7,-2),(5,1),(3,p)

The degree of x2 – 5x + 2 = x3 is:​

 x2 – 5x + 2 = x3

x2 - 5x + 2 - x3 = 0

-x3 + x2 - 5x + 2 = 0

If we change the sign of these equation then,

x3 - x2 + 5x - 2 = 0

Ans:- 3  

Note: The degree is the value of greatest exponent of any expression.

A body is falling freely, the total energy of the body as it falls

 (A) Increases

(B) First decrease then increase

(C) Remains same 

(D) First increases then decreases

Ans:- (C) Remains same

The money receivable from a customer, to whom business sold goods on credit is called

 a) Creditor

 b) Debtor

 c) Wholesaler

 d) Retailer​

 Ans:- b) Debtor

Find A: C, if A:B = 7:8 and B:C = 16:21

 Solution:-

A:B = 7:8   is written as   A/B = 7/8

B:C = 16:21 is written as  B/C = 16/21

We have to find A:C = ? 

A:C is written as  A/C

A/C = A/B × B/C

A/C = 7/8 × 16/21

A/C = 2/3

A:C = 2:3

Ans:- A:C = 2:3

Add the following terms -2mm, 4 mn, - 6 mn

=  mn - 2mm + 4mn - 6mn

=  -2mm + mn (1 + 4 - 6)

=  -2mm + mn (-1)

=  -2mm - mn

Ans:-  -2mm - mn

The product of the place value of 5 and 6 in 70560

Option:

1) 30

2) 300

3) 3000

4) 30000

Ans:- 4) 30000

Explanation:- Place value of 5 = 500

         

                      Place value of 6 = 60

                      Product of Place value = 500 × 60

                                                   

                                                        Ans   = 30000

Write true or false. Correct and rewrite the statement if false

 Write true or false. Correct and rewrite the statement if false: 

a) Oxygen produced during photosynthesis comes from Carbon dioxide:- True

b) Connective tissue provides insulation to the animal body:- True

c) Adding iodine solution to the leaf removes chlorophyll from it:- True

d) In a dicot leaf, both upper and lower epidermis contains stomata:- False

Statement:- Becausce in dicot leaf the stomata are found only on the underside of the leaf

e) Spongy mesophyll cells perform the maximum amount of photosynthesis:- False 

Statement:- Becausce spongy mesophyll cells do not contain as many chloroplasts as those found in palisade cells.

Find out the mis –match in the following

 A) Nemathelminthes – Pesudocoel

B) Arthropoda –Haemocoel

C) Chordata – Enterocoel

D) Platyhelminthes – True coelom

Ans: C) Chordata – Enterocoel

Did animals emit radio waves just like humans emit infrared ?

 Of course yes ! As we like emit infrared radiation same as animal also emit.

Why animal also emit radiation like human ?

first of all we try to know that what is the difference between animal and human.!

i)  Human is intelligent than animals.

ii) Animals are so stronger than human.

But both have physical body like 1) Bones

                                                     2) Blood

                                                     3) Cell

                                                     4) Skin

                                                     5) Brain...etc

So thats why animals also emits radio waves just like humans emit infrared radiation.