industrial services inc pa

a) Metal casting can be tested for cracks by putting them in baths of radioactive salts. The castings are then inspected for radioactivity to find out any penetration of salts into cracks. Absence of salt penetration indicates absence of cracks. b) Radioactive isotopes can be used to detect a..

Two-way operation is essential for satisfactory telephone service, and many of the problems of the industry arise from this fac..

Question: What direct value does a forest have for man? Answer: Forests contribute to the economic development of our country by providing goods and services to the people and industry. They are intimately linked with our culture and civilization. Forests are useful ..

What is a Modem? - A modem (a modulator/demodulator) lets you connect your computer to a standard telephone line so that you can transmit and receive electronically transmitted data. It is the key that unlocks the world of the Internet and its World Wide Web, commercial online services..

Agriculture is a very important human activity in any country. Agriculture is a primary activity - serving as the basis of many other activities. Agriculture supports food production, textile industries, food - based industries, agro - processing industries, oil - ..

a) Treatment plants established to treat industrial effluents before they are released to rivers. b) Reuse of treated water for non drinking purposes. c) Use of sewage and city waste water for irrigation to agricultural and horticultural crops. d) Ban and imposition of fines on ..

Two-way operation is essential for satisfactory telephone service, and many of the problems of the industry arise from this fact. A simplified circuit for obtaining two-way operation is shown in the below figure. This is called a local-battery system because a separate battery i..

a) They act as decomposers in nature. b) They clear the environment of debris and clean the environment. c) They fix atmospheric nitrogen and provide it to plants. d) They are used in industries to produce alcohol, acetone, vinegar, methane, some vitamins and antibiotics. e) They ar..

. Reduced care of young ones leading to increased child health problems as well as vulnerability of children to many diseases. Reduced health care to mothers. Difficulties encountered in implementation of all national and state developmental programmes. Increased government expenditure. Increased d..

A coaxial cable consists of an inner conductor and an outer conductor, separated by a dielectric insulating material. The inner conductor is made of a copper wire encased inside the dielectric material. As for the outer conductor, it is made of copper, tinned copper, or copper-coated steel. T..