Signals and Switches - General Questions (2)

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Signals and Switches - General Questions

What is the minimum voltage required before a diode will allow current to flow between the cathode and the anode?

A.	0.7 V
B.	0.07 V
C.	4.3 V
D.	0.2 V

Answer: Option A

Explanation:

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10.

In a graphical representation of voltage versus time, ________ is displayed on the ________ axis and ________ is displayed on the ________ axis.

A.	time, y, voltage, x
B.	voltage, y, time, x

Answer: Option B

Explanation:

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11.

The abbreviation NO, when used with respect to electromechanical relays, stands for not operational.

A.	True
B.	False

Answer: Option B

Explanation:

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12.

Normal operation of an NPN bipolar transistor requires the base to be ________ with respect to the emitter, and ________ with respect to the collector.

A.	positive, negative
B.	positive, positive
C.	negative, positive
D.	negative, negative

Answer: Option A

Explanation:

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13.

Is the transistor in the given figure considered ON or OFF?

mcq2_1025_1 (1)

A.	OFF
B.	ON
C.	Not enough information is provided.

Answer: Option A

Explanation:

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14.

If the input voltage on the base of the transistor in the given figure is changed to +10 V, what is the new voltage at the collector V_c?

mcq2_1025_1

A.	Not enough information is provided.
B.	Vc = 10 V
C.	Vc = 0 V
D.	Vc = 5 V

Answer: Option C

Explanation:

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15.

When an IC has two rows of parallel connecting pins, the device is referred to as a:

A.	QFP
B.	DIP
C.	TSSOP
D.	CMOS

Answer: Option B

Explanation:

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16.

An indication of cutoff in an NPN bipolar transistor is that the:

A.	collector current is maximum
B.	collector-to-emitter voltage equals zero
C.	base-to-emitter voltage equals 0.7 V
D.	collector to emitter appears to be open

Answer: Option D

Explanation:

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Signals and Switches - General Questions (2)

Signals and Switches - General Questions

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