In a cascade control, the value of the controlled variable of the primary controller is provided to the secondary controller as a set point.

In a cascade control, the value of the controlled variable of the primary controller is provided to the secondary controller as a set point.

	a)	True
	b)	False

Wrong

The correct answer is: False

In a cascade control, the controller which provides the set point is:

	a)	The father controller
	b)	The master controller
	c)	The supreme controller
	d)	None of the above

In a cascade control, the controller which receives the set point from the other controller is:

	a)	The parent controller
	b)	The slave controller
	c)	The child controller
	d)	None of the above

In a cascade control, the secondary controller can be operated only in cascade mode and not in automatic or manual modes.

	a)	True
	b)	False

Wrong

The correct answer is: False

In a cascade control, the output of the master controller is used by the slave controller as a set point, only when the slave controller is in:

	a)	Automatic mode
	b)	Manual mode
	c)	Cascade mode

Wrong

The correct answer is: Cascade mode

A bumpless transfer can be achieved by manually resetting the primary controller's output equal to that of the secondary controller's output.

	a)	True
	b)	False

Wrong

The correct answer is: False

It is a common practice to use the slave controller of the cascade control in either the automatic or the manual mode during the startup and the troubleshooting operations.

	a)	True
	b)	False

The initialization is required in the cascade control to ensure:

	a)	Bump transfer
	b)	Bumpless transfer
	c)	Initialized transfer
	d)	None of the above

Wrong

The correct answer is: Bumpless transfer

In a cascade control by the modern control system, the output of the primary controller can track the set point of the secondary controller when the secondary controller is in either the automatic or the manual mode. This tracking feature is known as the:

	a)	PV tracking
	b)	MV tracking
	c)	Initialization

Let's consider a cascade control in which a flow controller is the secondary controller and in automatic mode. Let's assume that its instrument range is 0 to 200 (Kl/Hr or GPM) and the current set point is 50 (Kl/Hr or GPM). In order to ensure the bumpless transfer, when the secondary controller is switched from the automatic to the cascade mode, the output of the primary controller:

a) Should be 50 %

b) Should be 25 %

c) Should be 0 %

d) Can be any value

The cascade control performs very well:

	a)	When the response of the controlled variable of the primary controller is very fast compared to that of the secondary controller
	b)	When the response of the controlled variable of the primary controller is very slow compared to that of the secondary controller
	c)	Always

What is a cascade control?

	a)	Two controllers act on the same manipulated variable simultaneously.
	b)	One controller's output is fed to the other controller as a set point............is the correct answer
	c)	There are two controllers, but only one controller is used at a time. Either controller can be used by switching depending on the process condition............was your answer
	d)	None of the above.

A bumpless transfer can be achieved by manually resetting the primary controller's output equal to that of the secondary controller's output.

	a)	True...........was your answer
	b)	False...........is the correct answer

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