A large fraction of the thermal energy generated in the engine of a car is rejected to the air by the radiator through the circulating water. Should the radiator be analyzed as a closed system or an open system?

Is it possible to interface an IC with a different technology such as TTL to HCS12 ports? What are the conditions in terms of electrical parameters that need to be satisfied for this purpose?

Are there any other controllers like Arduino that run C++? And if so, what are the names of them? Is there any used outside of hobby builds and more for manufacturing?

Differentiate between "Threshold and Resolution" with suitable examples.

g An analog voice signal, sampled at the rate of 8 kHz (8000 samples/second), is to be transmitted by using binary frequency shift keying (FSK). The modulator uses two frequencies 1 MHz and 1.2 MHz for signaling the logical bit values 0 and 1.

A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water that enters the evaporator at 60°C at a rate of 0.415 kg/s and leaves at 40°C.

Roentgens are used to measure the amount of: uranium fuel burned radiation hydrogen isotopes

What is the maximum % carbon for structural steel?

An airplane flies from San Francisco to Washington DC at an air speed of 800 km/hr. Assume Washington is due east of San Francisco at a distance of 6000 km.

An example of Ferrous alloy is Brass a) - True b) - False

There is no difference in boring and drilling. a) - True b) - False