Electrical Engineer (Qatar Exam) Test-5

20 Questions - Developed by:
- Developed on: - 590 taken

Qatar engineering registration exam preparation

  • 1
    A copper cable used in a plain old telephone service line has a loss of 1.5 dB/km. What is the approximate loss experienced if the user is located 1.5km from a central office?
  • 2
    A lossy transmission line is used to connect a transmitter to an antenna. If the VSWR measured at the antenna end of the transmission line is 1.5, which of the following statement is correct?
  • 3
    Which of the following characteristics is not typical of a project manager:

  • 4
    The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain without feedback will be:
  • 5
    A de current of 50A is flowing in an isolated wire. The magnitude of the magnetic field intensity, H (A/m), 10cm from the center of the wire is: H= I/2πr
  • 6
    Which type of braking is used in an induction motor:

  • 7
    What is the common or usual method to ensure that the final set of construction documents satisfy the clients program and design goals?
  • 8
    In a cascade amplifier, to reduce the loading effect at the output, the output impedance of the last stage should be:
  • 9
    In a cascade amplifier, to reduce the loading effect at the input, the input impedance of first stage should be:
  • 10
    In which of the following circuit will the voltage source produce the most current:

  • 11
    Which of the following theorem is used for frequency?
  • 12
    The main cause of transformer humming is:
  • 13
    If the induction motor speed at no-load is 745 RPM, what is the speed of the motor?
  • 14
    Synchronous speed for motor 1600 RPM, 60hz, Calculate number of poles.
  • 15
    At what region of operation is the base emitter junction forward biased and the based collector junction reverse biased for BJT?
  • 16
    What is the role of the Zener diode?

  • 17
    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?
  • 18
    Why we use power factor correction device to:
  • 19
    Rotor of induction motor is rotating at synchronous speed, what is torque?
  • 20
    The underground cable is laid in a marine environment at system voltage A. What shall be the design of the cable insulation?

Comments (0)