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Engines are rated at specified conditions. Then which of the following statements are correct? 1. Power developed increases as local temperature increases. 2. Power developed increases as local temperature decreases 3. Power developed is not dependent on local temperature. 4. Power developed increases as local atmospheric pressure increases. 5. Power developed increases as local atmospheric pressure decreases.
Thermal runaway in a transistor biased in the active region is primarily due to a) heating of the transistor b) changes in β, which increases with temperature c) base emitter voltage VBE which decreases with rise in temperature d) change in reverse saturation current due to rise in temperature Which of the following options is correct?
Thermal runaway in a transistor biased in the active region is due to 1. heating of the transistor. 2. change in β due to an increase in temperature. 3. change in reverse collector saturation current due to a rise in temperature. 4. base-emitter voltage VBE which decreases with rise in temperature. Which of the above statements is/are correct?
Which one of the following is true with regard to a CPU having a single interrupt request line and single interrupt grant line? i) Neither vectored nor multiple interrupting devices is possible. ii) Vectored interrupts is not possible but multiple interrupting devices is possible. iii) Vectored interrupts is possible and multiple interrupting devices is not possible. iv) Both vectored and multiple interrupting devices are possible.
Which combination of the following statements is correct? The incorporation of reheater in a steam power plant: P: always increases the thermal efficiency of the plant. Q: always increases the dryness fraction of steam at condenser inlet. R:  always increases the mean temperature of heat addition. S:  always increases the specific work output.
Thermal stability is dependent on thermal runaway which is_________
Consider the following statements about thermal conductivity: 1) Thermal conductivity decreases with increasing molecular weight 2) Thermal conductivity of non-metallic liquids generally decreases with increasing temperature 3) Thermal conductivity of gases and liquids is generally smaller than that of solids Which of the above statements are correct?
A thermal reservoir at 538°C is brought into thermal communication with another thermal reservoir at 260°C, and as a result 1055 kJ of heat is transferred only from the higher to lower temperature reservoir. Determine the change in entropy of the universe due to the exchange of heat between these two thermal reservoirs.
Thermal runaway of a thyristor occurs because
Match List-I with List-II and select the correct answer using the code given below the Lists: List I (Low-Latitude Climate) List I (Characteristic) A. Wet Equatorial 1. Uniform temperatures, mean near 27°C  B. Monsoon and trade wind coastal 2. Marked temperature cycle with very high temperature before the rainy season C. Wet-dry tropical  3. Temperatures show an annual cycle with a high temperature in the high-Sun season Strong temperature cycle. with intense temperature during the high-Sun season  D. Dry tropical 4. Strong temperature cycle, with intense temperature during the high-Sun season