Give the characteristic values of the input noise generators of an amplifier with amplification of 100 if, at grounded input, the output noise is characterized in the catalog as 5 microVolt/Hz0.5 ; and, with 100 kOhm generator resistance, the output noise is 500 microVolt/Hz0.5 , at the following extra condition:

1. Suppose that the input impedance is infinite.
2. Suppose that the input impedance is 100 kOhm.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise