Related Questions

Thermal runaway occurs when ___________
A Collector is reverse biased
B Transistor is not biased
C Emitter is forward biased
D Junction capacitance is high
Concerning the caste system, __________said the following to Narayana Guru: "The casteHindus and the low caste-Hindus are both the sons of Hinduism. The caste-Hindu is the elder brother who shoulders responsibility, and he therefore exercises certain privileges. The low casteHindu is his younger brother who is to be cared for. If the elder brother turns out to be somewhat rough and aggressive that should not make the younger brother a runaway from his mother Hinduism."
A Chattambi Swamikal
B Dadabhai Naoroji
C Tilak
D Mahatma Gandhi
For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally
A Decreases
B Increases
C Remains unchanged
D Increases exponentially
The passengers and crew members of the aeroplane had a . . . . . . . escape when it was taking off from the runaway.
A narrow
B large
C little
D brief
E better
The runaway speed of a hydraulic turbine is the speed
A At full load
B At which there will be no damage to the runner
C Corresponding to maximum overload permissible
D At which the turbine will run freely without load
Runaway speed of a hydraulic turbine is
A Full load speed
B The speed at which turbine runner will be damaged
C The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
D The speed corresponding to maximum overload permissible
Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
A Copper
B Steel
C Aluminium
D Brass
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
A CO2
B N2
C O2
D CO
If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ law.
A Hyperbolic
B Parabolic
C Linear
D Logarithmic
Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because
A Convection becomes important
B Conduction becomes important
C Radiation becomes important
D Sub-cooled boiling occurs

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