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A power line is coupled capacitively through various parasitic capacitances to a shielded signal line as shown in the figure. The conductive shield is grounded solidly at one end. Assume that the length of the signal wire extending beyond the shield, and the shield resistance are negligible. The magnitude of the noise voltage coupled to the signal line is
On a winter day with atmospheric air at −15°C, the outside front wind-shield of a car has surface temperature of +2°C, maintained by blowing hot air on the inside surface. If the wind-shield is 0.5 m2 and the outside convection coefficient is 250 W/Km2, find the rate of energy loss through front wind-shield.
In the question given below, the sentence is divided into three parts I, II and III. For each part an alternate statement is also given. You have to determine if a part requires correction, and then mark that as your answer. In politics and public policy, nationalism is a (I)/ doctrine which mission is to protect a nation's right to self-govern and shield (II)/ fellows residents of a state from global economic and social pressures. (III) I. In politics and public policy, nationalism is an II. doctrine the mission of which is to protect a nation's right to self-govern and shield III. fellow residents of a state from global economic and social pressures.
A thin shield of emissivity E 3 on both sides is placed between two infinite parallel plates of emissivities E 1 and E 2 and temperatures T 1 and T 2. If E 1 = E 2 = E 3, then the fraction radiant energy transfer without shield takes the value
Reflector antennas are widely used to modify radiation patterns of radiating elements.
Which of the following statements are true regarding Rutherford’s model? (i) Atoms consist of atomic nucleus (ii) Size of a nucleus is around 10-15 m (iii) Rutherford’s postulate is that an electron might make a transition from one of its specified non-radiating orbit to another of lower energy
Which of the following radiating source is most common and convenient for use in spectrophotometer?
In which type of welding a gas shield, a consumable electrode is used and the welding can be done in all positions.
Match List 1 with List 2 and choose the correct answer form the code given below: List 1 (Model Concept) List 2 (Definition)  (a) Sector Model  1. Model of the internal structure of cities in which social groups are spatially arranged in a series of rings  (b) Concentric Zone Model  2. Nucleus of city where retail stores and offices are concentrated  (c) Bid-Rent theory  3. Theory that refers how price and demand on real estate changes as distance towards CBD increases  (d) Central Business District (CBD)  4. Model of internal structure of cities in which social groups are arranged around a series of sectors or wedges radiating from CBD
Read Assertion (A) and Reason (R) and answer:
Assertion (A): The legislature can forge a sledge-hammer capable of cracking open the corporate shell.
Reason (R): Corporate personality cannot be used as a shield to harm national interest.