QUES: As an electro-magnetic wave travels through the different parts of the antenna system (radio, feed line, antenna, free space) it may encounter differences in impedance (E/H, V/I, etc.). At each interface, depending on the impedance match, some fraction of the wave's energy will reflect back to the source, forming a standing wave in the feed line. The ratio of maximum power to minimum power in the wave can be measured and is called the standing wave ratio (SWR). A SWR of 1:1 is ideal. A SWR of 1.5:1 is considered to be marginally acceptable in low power applications where power loss is more critical, although an SWR as high as 6:1 may still be usable with the right equipment. Minimizing impedance differences at each interface (impedance matching) will reduce SWR and maximize power transfer through each part of the antenna system.
A term that refers to the highs and lows of power in electro magnetic waves is?

ANS: standing wave ratio

QUES: On matchdays, in a tradition going back to 1962, players walk out to the theme tune to Z-Cars, named "Johnny Todd", a traditional Liverpool children's song collected in 1890 by Frank Kidson which tells the story of a sailor betrayed by his lover while away at sea, although on two separate occasions in the 1994, they ran out to different songs. In August 1994, the club played 2 Unlimited's song "Get Ready For This", and a month later, a reworking of the Creedence Clearwater Revival classic "Bad Moon Rising". Both were met with complete disapproval by Everton fans.
What was the reaction of the crowd to the Everton replacement theme songs in 1994?

ANS: disapproval

QUES: Delhi Metro is being built and operated by the Delhi Metro Rail Corporation Limited (DMRC), a state-owned company with equal equity participation from Government of India and Government of National Capital Territory of Delhi. However, the organisation is under administrative control of Ministry of Urban Development, Government of India. Besides construction and operation of Delhi metro, DMRC is also involved in the planning and implementation of metro rail, monorail and high-speed rail projects in India and providing consultancy services to other metro projects in the country as well as abroad. The Delhi Metro project was spearheaded by Padma Vibhushan E. Sreedharan, the Managing Director of DMRC and popularly known as the "Metro Man" of India. He famously resigned from DMRC, taking moral responsibility for a metro bridge collapse which took five lives. Sreedharan was awarded with the prestigious Legion of Honour by the French Government for his contribution to Delhi Metro.
Padma Vibhushan E. Sreedharan was popularly known by what nickname?

ANS: "Metro Man"

QUES: In the 20th century, new types of glass such as laminated glass, reinforced glass and glass bricks have increased the use of glass as a building material and resulted in new applications of glass. Multi-storey buildings are frequently constructed with curtain walls made almost entirely of glass. Similarly, laminated glass has been widely applied to vehicles for windscreens. While glass containers have always been used for storage and are valued for their hygienic properties, glass has been utilized increasingly in industry. Optical glass for spectacles has been used since the late Middle Ages. The production of lenses has become increasingly proficient, aiding astronomers as well as having other application in medicine and science. Glass is also employed as the aperture cover in many solar energy systems.
Walls used for storage are often made of what material?

ANS:
unanswerable