# Electrical Engineer (Qatar Exam) Test-6

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Qatar engineering registration exam preparation

• 1
Cable length is 1000m, time of returning signal is 9.43μsec. What is the speed of wave in the cable?
• 2
An antenna has an effective aperture of 10m². What additional information is required to determine the amplifier power?
• 3
10HP Single phase motor, 0.8 PF, 240V, Efficiency = 0.6, What is the current?
Hint: Pout = n V I cos Ø

• 4
Which of the following is not opportunity to do the project?
• 5
An alternator is operating at __________ for capacitive loads.
• 6
A super heterodyne AM receiver within an intermediate frequency (IF) of 455 kHz is to be turned to listen to a station at 540 kHz. What tuning frequency is used in the local oscillator?

• 7
For which of the following topologies can 10BaseT not be used without additional hardware conversion?
• 8
High voltage windings of transformer have _________ resistivity than the low voltage side.
• 9
ACR of conductor have 7 steel wires and 25 aluminum wires can be specified as:
• 10
Cable length is 1000m, time of returning signal is 9.43μsec what is speed of wave in the cable?

• 11
The equivalent circuit of induction machine at no load is the same as that of the transformer but with
• 12
Which of these is not a rule of interaction?
• 13
Within the battery, conventional current flow is
• 14
Activity on arrow needs to use dummy activities to avoid precedence problem that can happen due to:
• 15
What is the average value of signal v(t) = 5 sin377t
• 16
A 3 phase transformer, 25MVA, 66-12.47kV, delta-wye connected, 8 percent impedance. On the 100 MVA,
per unit impedance is most nearly

• 17
A DC Voltmeter with coil resistance 150Ω is to be measured with sensitivity of 10,000Ω/V and the voltage
Range 0-100V. What type and magnitude of resistance required? Hint: 1/Ifs = (Rext+Rcoil ) / Vfs
• 18
The offset of a particular segment varies from
• 19
The power gain of 30dB is equivalent to which amplification factor
• 20
A 1000m cable is terminated with a short circuit at the far end. The first reflected wave appears 9.43μs after the incident wave. The actual velocity in the cable divided by the speed of light is: Vp = 2L/To