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Capacitive reactance: Measure of a capacitor’s opposition to AC.
Impedance: Overall opposition of a circuit to current.
Resistance: Opposition that a substance offers to the flow of electric current.

Negative feedback improves bandwidth and flatness of frequency response with the expense of gain.
Negative feedback (or balancing feedback) occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.

Number of working strokes per min. for a two stroke cycle engine are equal to the speed of the engine in r.p.m.
While number of working strokes per min. for a four stroke cycle engine are one half the speed of the engine in r.p.m.

The purpose of morse test is to obtain the approximate indicated power of a multi cylinder engine.
It consists of running the engine against a dynamometer at a particular speed, cutting out the firing of each cylinder in turn and noting the fall in BP each time while maintaining the speed constant.
The assumption made on the test is that frictional power is depends on the speed and not upon the load on the engine .

Coriolis acceleration is the acceleration under consideration when the body moves in circular motion towards the centre or outward from the centre.

thickness upto which heat flow increases and after which heat flow decreases is known as critical thickness

The atomic number of Arsenic (As) is 33, which gives an electronic configuration of 2, 8, 18, 5.

Adding impurities to intrinsic semiconductor, be it N type or P type, causes the formation of electron hole pairs under the effect of an electric field, thereby increasing conductivity.

Ripple frequency is the frequency of the residual AC voltage after being rectified to a DC voltage. In case of full wave rectifiers, ripple frequency is twice the input voltage.

Positive feedback is necessary to produce sustained oscillations.

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