- They are mechanically strong
- They do not require any voltage for filament heating
- Both (A) and (B)
- None of the above
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In a grid control of mercury arc rectifiers when the grid is made positive relative to cathode, then it the electrons on their may to anode.?
Answer: Option 1 Let'
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In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as?
Answer: Option 2 Let'
1 Answers 11 views
Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the?
Answer: Option 4 Let'
1 Answers 1 views
What advantages do ICs have over discrete-device circuits due to their greater complexity (i.e. more circuitary in less area)?
Answer: Option 4 Let'
1 Answers 1 views
In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called?
Answer: Option 3 The narrow zone surrounding the shear plane in machining is termed as primary shear zone. The area surrounding the chip-tool contact region is called the secondary deformation zone. This...
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Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area ; in the casting)?
Answer: Option 4 Let'
1 Answers 1 views
Which of the following rectifiers have been used extensively in supplying direct current for electroplating?
Answer: Option 2 Let'
1 Answers 1 views
Which of the following rectifiers are primarily used for charging of low voltage batteries from AC. supply?
Answer: Option 4 Let'
1 Answers 1 views
Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal?
Answer: Option 4 Electromagnetic type of pump is used in liquid metal cooled reactor for circulation of liquid metal
1 Answers 1 views