ECET EEE 2009-10

1. The motor having wider range of speed control is

A. Synchronous motor
B. DC Shunt motor
C. Squirrel cage induction motor
D. Double squirrel cage induction motor

Answer : Double squirrel cage induction motor
Explanation:-

2. The drive motor for large rice mill would be

A. DC Shunt motor
B. Synchronous motor
C. Squirrel cage induction motor
D. Slip ring induction motor

Answer : Squirrel cage induction motor
Explanation:-

3. In sewing machines the following motor is preferred

A. split phase motor
B. AC Series motor
C. Shaded pole motor
D. Universal motor

Answer : Universal motor
Explanation:-

4. The motor used in elevators is

A. Capacitor start,single phase induction motor
B. Three phase induction motor
C. Shaded pole motor
D. synchronous motor

Answer : Shaded pole motor
Explanation:-

5. When a fuse is rated 10A, it means

A. It will burn if it exceeds 10A
B. It will work only if current is 10A
C. It has a resistance of 10A
D. It will not work if current is less than 10A

Answer : It will burn if it exceeds 10A
Explanation:-

6. In order to establish an effective ground path, impedance must be

A. Low
B. Reciprocal
C. Multi phase
D. High

Answer : Low
Explanation:-

7. How does earthing/grounding prevent an electric fault

A. grounding protects the line side of the circuit
B. grounding protects the load side of the circuit
C. grounding cannot prevent an electric fault
D. grounding reduces potential difference

Answer : grounding reduces potential difference
Explanation:-

8. A programmable logic controller is a device that is capable of being programmed to perform

A. control functions
B. network functions
C. transfer function
D. circuit functions

Answer : control functions
Explanation:-

9. The important application of Schrage motor is in

A. Conveyor
B. rolling mill
C. paper mill
D. Marine drive

Answer : Conveyor
Explanation:-

10. The output expression for EX-OR Gate is

A. Y=AB
B. Y=AB+A'B
C. Y=A'B+AB'
D. Y=AB'+(AB)'

Answer : Y=A'B+AB'
Explanation:-