Radiations from a black body are proportional to____________?
Radiations from a black body are proportional to____________?
A. T1
B. T2
C. T3
D. T*
Similar Posts
In induction heating ___________ is abnormally high?
In induction heating ___________ is abnormally high?A. phase angle
B. frequency
C. current
D. voltageIn arc furnace the function of choke is______________?
In arc furnace the function of choke is______________?A. to stabilize the arc
B. to imprpve, power factor
C. to reduce severity of the surge
D. none of the aboveThe electrode of a direct arc furnace is made of____________?
The electrode of a direct arc furnace is made of____________?A. tungsten
B. graphite
C. silver
D. copperWhich of the following devices is necessarily required for automatic temperature control in a furnace ?
Which of the following devices is necessarily required for automatic temperature control in a furnace ?A. Thermostat
B. Thermocouple
C. Auto-transformer
D. Heating elements of variable resis-tance materialWhen a body reflects entire radiation incident on it, then it is known as____________?
When a body reflects entire radiation incident on it, then it is known as____________?A. white body
B. grey body
C. black body
D. transparent bodyWhich of the following insulating materials was suitable for low temperature applications ?
Which of the following insulating materials was suitable for low temperature applications ?A. Asbestos paper
B. Diatomaceous earth
C. 80 percent magnesia
D. Cork