AP ECET EEE 2020-5

1. In case of a double cage induction motor, the inner cage has

A. high impedance and low resistance
B. low inductance and high resistance
C. low inductance and low resistance
D. high inductance and high resistance

Answer : A. high impedance and low resistance
Explanation:-

2. A single phase induction motor is not self starting because it has

A. no slip
B. Absence of rotating magnetic field
C. High inertia
D. Rotor is short circuited

Answer : B. Absence of rotating magnetic field
Explanation:-

3. Which of the following will have a better power factor

A. Capacitor start
B. Shaded pole
C. split phase
D. capacitor run

Answer : D. capacitor run
Explanation:-

4. The effect of water hammer can be minimised by using

A. Anvil
B. Spill way
C. Surge tank
D. Draft tube

Answer : C. Surge tank
Explanation:-

5. If load factor and diversity factor increases, the cost of units generated

A. decreases
B. increases
C. Remains same
D. insufficient data

Answer : A. decreases
Explanation:-

6. In _____ Tariff the total energy consumed is divided into blocks

A. Flat rate
B. Block Rate
C. Two part
D. Maximum demand

Answer : B. Block Rate
Explanation:-

7. The shielding of nuclear reactor is made of

A. Heavy water
B. Uranium
C. Cadmium
D. Cement concrete

Answer : D. Cement concrete
Explanation:-

8. One of the drawbacks of low power factor is

A. decreses the number of units consumed
B. decreases the efficiency of the system
C. improvement in voltage regulation
D. reduction in overall cost per unit

Answer : B. decreases the efficiency of the system
Explanation:-

9. Mho relay is normally used for protection of

A. short transmission lines
B. Medium transmission lines
C. Long transmission lines
D. No length criterion

Answer : C. Long transmission lines
Explanation:-

10. ______ relay is an instantaneous relay

A. Induction disc type
B. Balanced beam type
C. Hinged armature type
D. Polarized type

Answer : A. Induction disc type
Explanation:-