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Below stated are some of the statements about the Alternating current. You need to identify which of the following is incorrect, 1. DC power is far more powerful than AC power. The efficiency and power to size characteristics of DC motors and apparatuses are increased. Lighting by DC (LED) is 75% more efficient than lighting from incandescence. 2. A comparatively high voltage alternating current may be generated and easily raised and dropped by the static equipment known as the transformer, which makes electrical energy transmission and distribution economical, 3. Initial costs and maintenance of the AC motor are less expensive since it has no switch and is less powerful than the DC motor for constant working speed, hence it is desired to create power as alternating current. 4. The great efficiency of transmission in ac makes electric power generation cost-effective, Produced in huge quantities in one station and distributed throughout a vast area.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: No pink is a park. All pink are roads. Some dolls are roads. No doll is a ball. Conclusions: I. Some roads are not ball. II. Some pink are dolls. III. All park can be roads. IV. No park is a ball.
Statement: Some buses are roads. All tables are roads. Conclusion: I. Some buses are table. II. Some tables are buses. III. Some roads are tables. IV. Some roads are buses.
A, B and C are three places such that there are three different roads from A to B, four different roads from B to C and three different roads from A to C. In how many different ways can one travel from A to C using these roads?
Consider the given statement and decide which of the given assumption(s) is/are implicit in the statement. Statements: The present state government, if it wants to register victory in the upcoming state elections, should get the roads constructed in the state. Assumptions: 1) Most of the people of the state want their government to build roads in their state. 2) Majority of the people of the state will vote for the current government if it builds the roads.
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statement : Traffic jams on most of the roads in the city have become a regular feature during monsoon.

Assumptions :
I. Material used for road construction cannot withstand the fury of monsoon resulting into innumerable pot holes on the roads.
II. Number of vehicles coming on the roads is much more in monsoon as compared to other seasons.
Match List-I and List-II, and select the correct answer using the codes given below the lists.   List - I   List – II i. Index plan 1 Details of plumbing service, water supply, and sewage disposal system ii. Key plan 2 The relative position of all the different units iii. Service plan 3 The general layout of a new town showing the position of roads, market, hospital, parks, etc. iv. Layout plan 4 Details of the particular building
A person X was driving in a place where all roads ran either north-south or east-west, forming a grid. Roads are at a distance of 1 km from each other in a parallel. He started at the intersection of two roads, drove 3 km north, 3 km west and 4 km south. Which further route could bring him back to his starting point, if the same route is not repeated?
Which of the following statements is not true with regard to Highways and Roads? (i)  National Highways connect the state capitals, major cities, important ports, railway junctions, etc constitute about 1% of total road length in India. (ii) State Highways join the state capitals with district headquarters and other important towns constitute about 4% of total road length in India. (iii) District roads are the connecting link between District Headquarters and the other important nodes in the district and constitute about 14% of total road length in India. (iv) Rural roads are vital for providing links in rural areas and constitute about 80 per cent of the total road length in India 
  In the following question below are given two statements followed by two conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.   Statements: Some roads are highways. No highways are railways. Some rail is railways. Conclusions: I. Some highways are roads. II Some roads are railways. III. All rail is railways. IV. Some rail is not highways.