Test 1 General Electrical Engineering

1 Insulated cables are usually rated by their : 

A. operating voltage. 
B. operating voltage and highest operating temperature 
C. operating temperature 
D. costAnswer

2 What is cable tray? 

A. Cable tray is a cover for many insulatated cables. 
B. Cable tray is a protective layer. 
C. Cable tray is a rating of cables. 
D. Cable tray is a metalic sheild used to protect cables.Answer

3_________ cannot sustain much voltage fluctuations. 

A. Sodium vapour lamp. 
B. Mercury vapour lamp. 
C. Incandescent lamp. 
D. Fluorescent lamp.Answer

4 Class B insulators can bear temperature (in degree centigrade) upto

A. 130. 
B. 120. 
C. 105. 
D. 90.Answer

5 Excess 3 code is known as?

A. Weighted code 
B. Cyclic redundancy code. 
C. Self complementing. 
D. Algebraic code.Answer

6 Permittivity of free space is equal to

A. 8.854 × 10-09. 
B. 8.854 × 10-12. 
C. 9 × 10 09. 
D. 1.Answer

7 Capacitor banks are connected with ac induction motor

A. in parallel. 
B. in series. 
C. not connected at all. 
D. can be connected either way –series / parallel.Answer

8 By looking at which part of the motor it can be easily confirmed that a particular motor is D.C motor? 

A. Frame. 
B. Shaft. 
C. Commutator. 
D. Stator.Answer

9 In regenerative braking which of the following is true? 

A. Motor energy is dissipated as heat. 
B. Motor energy is dissipated in armature heating. 
C. Motor energy is dissipated in windage losses. 
D. Motor is made to run as generator.Answer

10 Which of the following statements regarding single-phase induction motor is correct? 

A. It requires only one winding. 
B. It can rotate in one direction only. 
C. It is self starting. 
D. It is not self starting.Answer