ECET EEE 2009-9

1. The unit of brightness is

A. Lambart
B. Lumens
C. Lux
D. Candle power

Answer : Lumens
Explanation:-

2. Spot welding is used for

A. Casting only
B. Thick sections
C. Thin metal sheets
D. Rough and irregular surfaces

Answer : Thin metal sheets
Explanation:-

3. In core type furnaces the secondary winding has

A. More number of turns
B. Single turn
C. Less number of turns
D. No turns

Answer : Single turn
Explanation:-

4. Mercury vapour at law/Jaw pressure gives a color of

A. Bluish white
B. Red
C. Bluish green
D. Pink

Answer : Bluish green
Explanation:-

5. In a lighting Installation, glare is found to be too much, it is desirable to

A. Increase the number of lamps
B. Increase the height of lamps
C. Decrease the height of lamps
D. Use higher wattage lamps

Answer : Increase the height of lamps
Explanation:-

6. During notching period

A. The current taken by the motor is practically
B. The current taken by the motor is not constant
C. The tractive effort by the motor is a varying quantity
D. The acceleration attained by the motor is constant

Answer : The current taken by the motor is practically
Explanation:-

7. The specific energy consumption for suburban service will be

A. between 18 to 32 watt hours per tonne km
B. between 10 to 18 watt hours pertonne km
C. between 50 to 75 watt . hours per tonne -km
D. between 125 to 150 watt hours per tonne - km

Answer : between 50 to 75 watt . hours per tonne -km
Explanation:-

8. The schedule speed is always

A. Greater than average speed
B. Smaller than average speed
C. Equal to average speed
D. Independent of average speed

Answer : Smaller than average speed
Explanation:-

9. When train going up gradient,the tractive effort required is

A. Smaller than when it is running on level track
B. Equal to when it is running on level track
C. Greater than when it is running on level track
D. Zero

Answer : Greater than when it is running on level track
Explanation:-

10. A system is said to be effectively grounded if its

A. Ratio of X0/X1 less than 3.0
B. Ratio of R0/X1 greater than 2.0
C. Ratio of X0/X1 greater than 3.0
D. Neutral is grounded directly

Answer : Ratio of R0/X1 greater than 2.0
Explanation:-