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Zener diodes are available for voltage output control purpose with Zener voltages
range from
A) 1to10V 8) 310 100 ४ 0) 11050 ४ 0) 110 300 ४

The applications of phototransistors includes

1. photo-electric counting and speed indication

2. automotive pollution control

3. automotive parking and head light control

4. automotive electronic ignition

A) 1 and 2 B) 2and3 C) 3and4 70) 18೧63

According to Fleming’s right hand rule, the direction of e.m.f. is represented by
A) first finger of the right hand

B) thumb of the right hand

C) second finger held at right-angle to both the thumb and first finger

D) second finger held inclined at an angle to both thumb and first finger

A conductor carries a current of 1000 A at right-angles to a magnetic field having a
density of 2 T. The force on the conductor with 2 m length is
A) 1000 N 8) 50011 ௦) 0.004 11 D) 4000 N

The number of ignition coils required for the eight cylinder V-8 engine with
distributorless ignition is

A) 1 B) 4 ©) 8 0) 16

The specific gravity of sulphuric acid of a lead-acid battery at 100% charge, 50%
charge and 0% charge are

A) 1.28, 0.64 and 0 B) 1.68, 1.40 and 1.2
C) 1.28, 0.80 and 0.5 D) 1.28, 1.20 and 1.12

Which of the following statement is/are correct about fully charged lead-acid battery ?
1. The active material in positive plate is lead peroxide.

2. The active material in positive plate is sponge lead.

3. The active material in negative plate is sponge lead.

4. The active material in negative plate is lead peroxide.

A) only 1 and3 B) only 1 and 4

C) only 2 and 3 D) only 2 and 4

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