cExams.net
Test # 124


1.
Which among the following is correct about e-Granthalaya ?

Login/Register to access massive collection of FREE questions and answers.
Login/Register

gk10
Quiz Index
2910 questions in 291 tests. Each test contains 10 questions.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291

Joshi
Prof. S.s.joshi's works on physical and chemical reaction under electrical discharge on active nitrogen, colloids, hydrogen peroxide are noteworthy.      .. More >>

luxembourgian:
adj.
1.relating to or characteristic of Luxembourg      .. More >>
  • Daily Health Tips
  • Benefits of Almonds
  • Most Expensive Paintings
  • Myth about Accounting
  • Best Shopping Malls of India
  • Expensive Things Youll Need In Your Dream House

  • Guglielmo Marconi

    Move

    History shows that Guglielmo Marconi was not deterred by his rejection, but in order to be able to exploit his idea he moved to England with his mother in February 1896.On their arrival, Marconi and his mother were met by his cousin, Henry JamesonDavies. He was an engineer himself, and gave the young Marconi an introduction to A.A. Campbell Swinton, Scottish consulting electrical engineer who was interested in communications and had been following some of the experiments performed by Hertz. As a result he had some connections who were of use to Marconi, introducing him to William Preece the Chief Engineer of the Post Office. Preece was keenly interested in wireless forms of communications and had performed a number of wireless experiments himself.Following up on his new introduction, Marconi undertook a number of demonstrations. The first was set up on the rooftops of two buildings in London in July of that year. Communication was successfully made over a distance of a few hundred yards. This impressed all that were present, especially because there were buildings in the line of transmission, and wireless communication was still very new and a great novelty.

    As a result of the success of the first demonstration a further test was requested on Salisbury Plain at the beginning of September. This time representatives from the War Office and the Admiralty were also present. In view of the additional observers, Marconi used parabolic reflectors at the transmitter and receiver to show the directional properties of the waves. This was important to show that secrecy could be maintained during transmissions. The use of this technology limited the range to only about two and a half kilometres. Further tests six months later used balloons to raise the height of more conventional antennas. This time a range of over seven kilometres was achieved.The next demonstration was made to the press. This was very successful, partly because of the novelty of being able to communicate electrically without any intervening wires. The effect was also enhanced by the showmanship used in the performance as both transmitter and receiver were housed in black boxes. As a result Marconi became an instant celebrity.Up until this time the new Hertzian or radio waves used by Marconi had not been put to any real use. Then in 1897 it was decided to test the new system and see if it could provide a reliable link across various stretches of water. If this were successful it would save on the installation of expensive submarine cables. In some of the first of these tests across the Bristol Channel, Marconis system proved to be very successful, further enhancing his image.


    Chourishi Systems