|
Mercury, in arc rectifiers, is chosen for ___
|
|
0
|
149
|
October 28, 2021
|
|
Normally, which of the following is used, when ___
|
|
0
|
115
|
October 28, 2021
|
|
Which of the following are the applications of D.C. system?
|
|
0
|
136
|
October 28, 2021
|
|
A commutating rectifier consists of ___
|
|
0
|
164
|
October 28, 2021
|
|
The metal rectifiers are preferred to valve rectifiers due to which of the following advantages?
|
|
0
|
132
|
October 28, 2021
|
|
Which of the following rectifiers are primarily used for charging of ___
|
|
0
|
146
|
October 28, 2021
|
|
Choose incorrect statement from the following?
|
|
0
|
156
|
October 28, 2021
|
|
On which of the following factors the number of phases for ___
|
|
0
|
134
|
October 28, 2021
|
|
To produce cathode spot in a ___
|
|
0
|
145
|
October 28, 2021
|
|
Which of the following rectifiers have been used extensively in ___
|
|
0
|
146
|
October 28, 2021
|
|
In a phase-shift control method, the phase shift, between anode and ___
|
|
0
|
168
|
October 28, 2021
|
|
In a mercury arc rectifier ___
|
|
0
|
157
|
October 28, 2021
|
|
If cathode and anode connections in a mercury arc rectifier are ___
|
|
0
|
153
|
October 28, 2021
|
|
In a rotary converter I2R losses as compared to a D.C. generator of ___
|
|
0
|
164
|
October 28, 2021
|
|
Which of the following metals is generally manufactured by electrolysis process?
|
|
0
|
171
|
October 28, 2021
|
|
The applications of selenium rectifiers are usually limited to ___
|
|
0
|
154
|
October 28, 2021
|
|
In phase-shift control method the control is carried out by ___
|
|
0
|
142
|
October 28, 2021
|
|
In a glass bulb mercury arc rectifier the maximum current rating is ___
|
|
0
|
167
|
October 28, 2021
|
|
The internal efficiency of a mercury arc rectifier depends on ___
|
|
0
|
196
|
October 28, 2021
|
|
In which of the following equipment direct current is needed?
|
|
0
|
155
|
October 28, 2021
|
|
Which of the following is reversible in action?
|
|
0
|
192
|
October 28, 2021
|
|
The ignited or auxiliary anode in mercury arc rectifier is ___
|
|
0
|
160
|
October 28, 2021
|
|
Ageing of a selenium rectifier may change the ___
|
|
0
|
183
|
October 28, 2021
|
|
In mercury arc rectifiers having grid, the arc can be ___
|
|
0
|
151
|
October 28, 2021
|
|
Which of the following mercury arc rectifier will deliver least undulating current?
|
|
0
|
144
|
October 28, 2021
|
|
The voltage drop at anode, in a mercury arc rectifier is ___
|
|
0
|
116
|
October 28, 2021
|
|
In a rotary converter armature currents are ___
|
|
0
|
181
|
October 28, 2021
|
|
A rotary converter combines the ___
|
|
0
|
174
|
October 28, 2021
|
|
In a mercury arc rectifier, the anode is ___
|
|
0
|
151
|
October 28, 2021
|
|
In selenium rectifiers efficiencies ranging from ___
|
|
0
|
125
|
October 28, 2021
|