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Electrical Engineer (Qatar Exam) Test-15

20 Questions - Developed by: - Developed on: 2022-05-19 - 776 taken

Qatar engineering registration exam preparation

1

Reinforce concrete will give:

High tensile strength
High compression strength
Both

2

What is the resistance for 100W and 200V potentials?

200
100
1600
400

3

The unit of conductivity:

Ohm/m
Ohm
Mho
Mho/m

4

The unit of resistance:

Mho
Ohm/m
Ohm
Ohm-m

5

The unit of resistivity:

Ohm
Mho/m
Ohm-m
Ohm/m

6

A differential relay designed to protect a zone of the distribution system, uses current transformer (CTs) connected to annually CTs. The auxiliary CTs must match both the phase shift and the ratio of the differential relays CTs if the values do not match. Which of the following is the least likely outcome?

The trip could occur only when the CTs are wired in parallel.
The trip could occur at a lower level than expected.
The trip could occur under a non-fault condition.
The trip could occur at a higher level than expected.

7

A Wrist watch mercury cell has a capacity of 200 x 10-3 AH. How many months can the watch function without replacement if it draws 15 x 10-6 A? Hint: Dh = I x t

30 months
24 months
9 months
18 months

8

A biomedical signal is sampled at 128Hz, no anti-aliasing fiber is used. Spectral analysis on the sampled data shows strong sit. The most likely source of the 58 Hz component is:

122 Hz source in the source signal
Power line artifact picked up by the equipment
Random noise in the original signal
70 Hz source in the original signal

9

During which of the following categories are you more likely to find status reports many changes and the creation of forecasts?

Execution
Concept
Planning
Initiation
Closure

10

The critical path in a project network is the:

Network path with the most difficult activities
Network path with the most merge resources
Shortest path through the network
Longest path through the network

11

In Hardware Description Language (HDL) the designer can specify the input and output. At what stage of function, name of input and output specified?

Entity Declaration
Both Architecture and Entity Declaration
Input and Output PIN assignment
Architecture Declaration

12

The equipment arrangement for transmit/receive of radio signal:

Array
Dish Antenna
Waveguide
Hyginus source

13

A D’Arsonval movement is with a resistance of 150 ohms is used to make ammeter. What is the maximum deflection range of ammeter?

0.3 A
0.3 mA
None of above
3 A

14

A certain communication signal uses a bandwidth BW of 2kHz. What is the classification of this signal?

Voice grade VHF
Wide band UHF
Narrowband VLF
Voice grade HF

15

On the question above, what is the required supply resistance to ensure proper operation of the Zener regulator circuit?

24 Ω
19 Ω
25 Ω
22 Ω

16

Engineers are:

Who design, build, test
Social and Economic manager
Manager

17

Loading effect can be reduced in a system by using:

Inverted Amplifier
Differential Amplifier
Non-inverted Amplifier
Integrator

18

Type of amplifier at transmitter:

Power Amplifier
Differential Amplifier
None

19

Fan Out logic gate is:

Number of Gate
Number of Gate connect to output
None

20

The heat loss inside a straight conductor is 60J upon applying current I for 5s. If the resistance of the conductor is decrease to half, and the same current is applied for 5s, what will be the heat dissipation:

120
60
30
15

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