Quiz: Electrical Engineering

Exam: UPPSC-AE

Topic: Miscellaneous

Each question carries 1 mark.

Negative marking: 1/3 mark

Time: 10 Minute

Q1. The number of output and input pins of 8085 microprocessors are respectively:

(a) 20,20

(b) 27,21

(c) 21,27

(d) None of the above

Q2. In INTEL 8085, while executing a program non-maskable interrupt occurs. The data present on data line is

(a) 00 H

(b) 24 H

(c) 36 H

(d) Can’t be predicted

Q3. Which of these is software interrupt?

(a) RST 4.5

(b) RST 5.5

(c) RST 6.5

(d) RST 5

Q4. When the supply voltage to an induction motor is reduced by 10 %, the maximum torque will be decreased approximately by:

(a) 5 %

(b) 10 %

(c) 19 %

(d) 40 %

Q5. It is given that the starting current of a 3-phase induction motor is 3-times the rated current, while the rated slip is 6%. What would be the ratio of starting torque to full-load torque?

(a) 1

(b) 1.8

(c) O.54

(d) 0.6

Q6. Choose the characteristics which is not related to an ideal op-amp?

(a) Very high gain

(b) Very high input impedance

(c) Very low output impedance

(d) Very low CMRR

Q7. What is the unit of reciprocal of reluctance?

(a) Henry

(b) Henry/ mater

(c) Meter/Henry

(d) Henry^(-1)

Q8. A single phase, half-wave, controlled rectifier has 400 sin〖(314 t)〗 as the input voltage and R as the load. For a firing angle of 60⁰ for the SCR, the average output voltage is

(a) 200/π

(b) 240/ π

(c) 300/ π

(d) 400/ π

Q9. The unit of conductivity is

(a) ohm/m

(b) mho/m

(c) ohm. m

(d) mho. m

Q10. The sensitivity of a PMMC instruments is 10 KΩ/V. If this instrument is used in a rectifier type voltmeter with half wave rectification, the sensitivity will be:

(a) 10 KΩ/V

(b) 9 KΩ/V

(c) 4.5 KΩ/V

(d) 2.2 KΩ/V