Electronics Test - Random
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Instruction:

Total number of questions : 20 .

Time alloted : 30 minutes.

Each question carry 1 mark, no negative marks.

1.
When referring to instruction words, a mnemonic is:

2.
A transformer that has 700 turns in the primary and 35 turns in the secondary has a turns ratio of 20:1.

3.

If the resistance is larger than the inductive reactance in the given circuit, the phase angle is _______.

4.
A differential amplifier has a common-mode gain of 0.2 and a common-mode rejection ratio of 3250. What would the output voltage be if the single-ended input voltage was 7 mV rms?

5.
How much energy is stored if 6.24 x 10^{18} electrons are stored in 4 volts?

6.
Power is measured in units of:

7.
The voltage across R3 is 20 volts.

8.
If you borrow from a position that contains a 0, you must borrow from the more significant bit that contains a 1. All 0s up to that point become 1s, and the digit last borrowed from becomes a 0.

9.
What happens to total resistance in a circuit with parallel resistors if one of them opens?

10.
An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ .

11.
The dependency notation " 1" inside a block stands for the ________ operation.

12.
Select the best description of read-only memory (ROM).

13.
If the voltage across a resistor ___, the current flowing through it will increase.

14.
A triangle wave consists of repeating:

15.

The total power in the given circuit is ___.

16.
The input resistance of the base of an emitter-follower is usually _________.

17.
The three types of relative pressure measurement are ________.

18.
What is a shift register that will accept a parallel input and can shift data left or right called?

19.
Which unit of charge contains 6.25 × 10^{18 } electrons?

20.
The commutative law of addition and multiplication indicates that:

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