Electrical Engineering Questions

Q1. In a D.C. machine, the value of peripheral speed should not, normally, exceed
(a) 10 m/s
(b) 20 m/s
(c) 30 m/s
(d) 40 m/s
Ans: c

Q2. The main difference between the isolation amplifier and an instrumentation amplifier is
A) an instrumentation amplifier has an input stage.
B) an instrumentation amplifier has an output stage.
C) an instrumentation amplifier has a differential stage
D) the input, output, and power supply stages of an isolation amplifier are all electrically isolated from
each other


Q3. The high voltage winding is usually which of the following type ?
(a) Cylindrical winding with circular conductors
(b) Cross-over winding with either circular or small rectangular conductors
(c) Continuous disc type winding with rectangular conductors
(d) All of the above types
Ans: d

> Q4. What is the minimum number of conversions per second of a clock rate of 1 MHz operating a 10-
stage counter in an ADC?
A) 1000
B) 976
C) 769
D) 697


Q5. Tractive magnets are operated from
(a) a.c. supply
(b) d.c. supply
(c) either a.c. or d.c. supply
(d) none of the above
Ans: c