BEL PE Electrical Question Paper 2014 is given below. This BEL PE Electrical Previous question contains 150 MCQ, each having 1 mark. We have only given the Technical questions from this paper. The syllabus for BEL PE Electrical is same as GATE syllabus for Electrical Engineering.

**BEL PE Electrical Question Paper 2014**

**1. If all the transmission zeros of a network are at infinity then it is a**

- high pass filter.
- low pass filter .
- band pass filter.
- can not say.

Ans : low pass filter .

**2. Hall effect used to measure**

- Electric field intensity
- Capacitance
- Conductivity of material
- None

Ans : Conductivity of material

**4. Which one of the following gate is called as Universal gate**

- AND gate
- XNOR gate
- OR gate d
- NAND gate

Answer : NAND gate

**5. ON state voltage drop across SCR lie between the range**

- 0 – 0.5 V.
- 0.5 – 1 V.
- 1 – 1.5 V.
- 1.5 – 2 V.

Answer : 1 – 1.5 V.

**6. The binary number 1010 is equivalent to the decimal number**

- Half adder
- Fulladder
- Half subtractor
- Full subtractor

Answer : Half adder

**7. For what condition Buchholz relay gives an alarm?**

- Transformer tank below oil levels detected
- Transformers tank above oil level detected
- No oil detected
- None of the above

Answer : Transformer tank below oil levels detected

**8. The unit of conductivity is**

- Ohmmetre
- Siemens/metre
- Celcius
- None of the above

Answer : Siemens/metre

**9. A 50HZ 20 poles alternator will run at**

- Greatest speed
- Smallest speed
- Moderate speed
- None of the above

Answer : Smallest speed

**10. A Stepup transformer used to increase**

- Frequency
- Current
- Voltage
- None of the above

Answer : Voltage

**11. The LASCR operates like a**

- Varactor
- Latch
- Photo diode
- LED

Answer : Latch

**12. A negativeresistance, microwave device for oscillator application is**

- IMPATT diode
- Step Recovery diode
- Gunn diode
- Schottky diode

Answer : Step Recovery diode

**13. The IMPATT diode operates at frequency range between**

- 10 -100
- 20 -200 GHZ
- 5 -500 GHZ
- d2 -50 GHZ

Answer : 10 -100

**14. The PEAK-TO-PEAK Current in Amps ripple in Amps is**

- 0.96
- 0.144
- 0.192
- 0.288

Answer :

**15. The average source current in Amps in steady-state is**

- 3/2
- 5/3
- 5/2
- 15/4

Answer: (B)

**16. If the base impedance and the line-to line base voltage are 100 ohms and 100kV respectively, then the real power in MW delivered by the generator connected at the slack bus is**

- -10
- 0
- 10
- 20

Answer: 0

**17. In the circuit shown below the op-amps are ideal. Then Vout in Volts is**

- 4
- 6
- 8
- 10

Answer : 8

**18. A 4-pole induction motor, supplied by a slightly unbalanced three-phase 50Hz source, is rotating at 1440 rpm. The electrical frequency in Hz of the induced negative sequence current in the rotor is**

- 100
- 98
- 52
- 48

Answer: (B)

**19. 25. In the circuit shown below what is the output voltage Vout in Volts if a silicon transistor Q and an ideal op-amp are used?**

- -15
- -0.7
- +0.7
- +15

Answer (B)

**20. The binary number 1010 is equivalent to the decimal number**

- 5
- 6
- 10
- 11

Answer : 10