DPDC Assistant Engineer (EEE) October 2025 – Written (BUET) question & solution

Questions from the DPDC Assistant Engineer (EEE) recruitment exam, October 2025 – Written (BUET), shared by the candidates who sat it. The paper: 8 written questions, 1 hour, 80 marks. So far 7 written questions have been shared. Topics include Electrical Machines, Circuit Analysis, Superposition, AC Circuits and Power Factor.

Written (7)

  1. Find the power delivered by the 10 Ω resistor using superposition.
  2. (a) Draw phasor diagram, consider voltage across capacitor as reference and show whether the pf is leading or lagging. (b) All values are…
  3. For the following circuit, the Q-point is set as V_{CE} = 6\ \text{V} and I_C = 1\ \text{mA} . Given that V_{BE} = 0.7\ \text{V} , V_{CC}…
  4. A 350 kVA, 200/400 V transformer has 1.2% resistance and 5.7% reactance. Find voltage regulation at rated load and 0.9 PF lagging. Also…
  5. A 3-phase, 10-kVA, 400-V, 50-Hz, Y-connected alternator supplies the rated load at 0.8 p.f. lagging. If armature resistance is 0.5 Ω and…
  6. One conductor of a three-phase line is open. The current flowing to the Δ-connected load through line R is 10 A. With the current in line…
  7. A telecommunication system monitors 10 substations, each containing 5 signal channels. If the signal bandwidth for each channel is 100 Hz…