|
Arc blow (a welding defect) is generally encountered in ___
|
|
0
|
129
|
September 27, 2021
|
|
Long distance railways use which of the following?
|
|
0
|
170
|
September 26, 2021
|
|
For radiant heating around 2250°C, the heating elements are made of ___
|
|
0
|
162
|
September 26, 2021
|
|
Radiations from proportional to ___
|
|
0
|
118
|
September 26, 2021
|
|
Induction heating takes place in which of the following?
|
|
0
|
120
|
September 26, 2021
|
|
The material of the heating element for a ___
|
|
0
|
137
|
September 26, 2021
|
|
A perfect black body is ___
|
|
0
|
116
|
September 26, 2021
|
|
Which of the following is an advantage of heating by electricity?
|
|
0
|
127
|
September 26, 2021
|
|
Which of the following devices is necessarily required for automatic temperature control in a furnace?
|
|
0
|
207
|
September 26, 2021
|
|
It is desirable to operate the arc furnaces at power factor of ___
|
|
0
|
140
|
September 26, 2021
|
|
In an electric press mica is ___
|
|
0
|
163
|
September 26, 2021
|
|
Which of the following will happen if the thickness of refractory wall of furnace is increased?
|
|
0
|
124
|
September 26, 2021
|
|
Heat transfer by condition will ___
|
|
0
|
111
|
September 26, 2021
|
|
___ has the highest value of thermal conductivity
|
|
0
|
136
|
September 26, 2021
|
|
Radiant heating is used for which of the following?
|
|
0
|
137
|
September 26, 2021
|
|
Which of the following methods is used to control temperature in resistance furnaces?
|
|
0
|
111
|
September 26, 2021
|
|
In a domestic cake baking oven the temperature is ___
|
|
0
|
271
|
September 26, 2021
|
|
The temperature inside a furnace is usually measured by which of the following?
|
|
0
|
146
|
September 26, 2021
|
|
For the transmission of heat from one body to ___
|
|
0
|
109
|
September 26, 2021
|
|
In heating the ferromagnetic material by induction heating, heat is ___
|
|
0
|
127
|
September 26, 2021
|
|
Property of low temperature co-efficient of heating element is desired due to which of the following reasons?
|
|
0
|
88
|
September 26, 2021
|
|
In an electric room heat convector the method of ___
|
|
0
|
189
|
September 26, 2021
|
|
A non-dimensional number generally associated with ___
|
|
0
|
140
|
September 26, 2021
|
|
When a body reflects entire radiation incident on it ___
|
|
0
|
156
|
September 26, 2021
|
|
Hysteresis loss and eddy current loss are ___
|
|
0
|
163
|
September 26, 2021
|
|
In the indirect resistance heating method, maximum heat-transfer takes place by ___
|
|
0
|
128
|
September 26, 2021
|
|
Which of the following insulating materials is suitable for low temperature applications?
|
|
0
|
220
|
September 26, 2021
|
|
Which of the following methods of heating is not dependent on the frequency of supply?
|
|
0
|
199
|
September 26, 2021
|
|
In direct arc furnace which of the following has high value?
|
|
0
|
128
|
September 26, 2021
|
|
Resistance variation method of temperature control is ___
|
|
0
|
162
|
September 26, 2021
|