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NCR Departmental Exam :Electrical, Question Bank With Answer

NCR Departmental Exam : Electrical, Question Bank With Answer

Electrical

Fundamental of Electricity

01.01    Potentiometer is variable:

(a) Resistor    (b) Capacitor  (c) Inductor    (d) None

01.02    Letter notation for switch in Plasser machine electrical drawing  is:

(a) b        (b) g                                  (c) S                           (d) K

01.03    Earth/ground is denoted in  Plasser machine  electrical drawing is:

(a) G         (b) OD/OA                     (c) E                           (d) A

01.04    Letter notation for circuit breaker in Plasser machine electrical drawing:

(a) C                                 (b) e                           (c) b                (d) K

01.05    Ohm’s law is not applicable to:

(a) DC circuits      (b) AC circuits          (c) Semiconductor    (d) None

01.06    Current is measured by:

(a) Ammeter         (b) Voltmeter                        (c) Energy meter     (d) Ohmmeter

01.07    Which of the following is not a standard wattage of incandescent lamp in India:

(a) 15W                            (b) 25W                     (c) 40W      (d) 50W

01.08    Size of power cable depends upon:

(a) Type of Insulation                 (b) Current                 (c) Voltage     (d) Power factor

01.09    One kilowatt hour/1 unit of electrical energy is same as:

(a) 6x106W           (b) 36x105ergs           (c) 36x105 Jules     (d) 36x105BTU

01.10    Voltmeter is used in circuit to measure the voltage:

(a) In series          (b) In parallel            (c) Both      (d) None

01.11    Ammeter is used in circuit to measure the current:

(a) In series          (b) In parallel            (c) Both      (d) None

Answer Sheet

Q. No.

Ans.

Q. No.

Ans.

Q.No.

Ans.

01.01

a

01.05

c

01.09

c

01.02

a

01.06

a

01.10

b

01.03

b

01.07

d

01.11

a

01.04

b

01.08

b

 

 

Electrical Components

02.01   Ohmic range of wire wound resistor is:

(a) 200KΩ to 300KΩ        (b) 1Ω  to 100KΩ     (c) 500KΩ to 1MΩ  (d) 1MΩ  to 10MΩ

02.02   Wattage range of carbon composition resistor is:

(a) 1/8 to 2W         (b) 3to 5W           (c) 6  to 10W      (d) None

02.03   Wattage range of wire wound resistor is:

(a) 405 to 500W               (b) 310 to 400W             (c) 201 to 300W     (d) Upto 200W

02.04   Max-value of Resistance of potentiometer which is used in transducer:

(a) 6KΩ     (b) 5KΩ                      (c) 1KΩ               (d) None

02.05   In short circuit reading ON ohmmeter will be:

(a) Zero                 (b) Infinite           (c) 10 MΩ      (d) 100 KΩ

02.06   In open circuit reading on ohmmeter will be:

(a) Zero                 (b) Infinite           (c) 10 MΩ      (d) 100 KΩ

02.07   What is resistance of 100W/220V bulb is:

(a) 500Ω                (b) 484Ω              (c) 848Ω       (d) None

02.08   Max tolerance value resistor is used generally:

(a) 1%                   (b) 4%                 (c) 5%       (d) 10%

02.09   If temperature is increase the value of resistance Will be:

(a) Decrease          (b) Increase         (c) No effect      (d) None

02.10   Ohmic range of carbon composition resistor is:

(a) 30 to 100MΩ       (b) 115 to  220MΩ   (c) Upto 22MΩ       (d) None

02.11   Which relation is correct:

(a) þ = RA                 (b) þ = lA     (c)  þ =  RlA      (d) None l                 

02.12     Why  should  not  touch  the  ohmmeter  wire  during  measurement  of  Resistance  by ohmmeter ?

(a) Can be electric shocked               (b) Resistor may be ground

(c)Ohmmeter show less value           (d) Resistor may be short circuit

02.13   The current following through a resistance is always in phase with the voltage across it irrespective of wave shapes?                                                                                           

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