NCR Departmental Exam :Electrical, Question Bank With Answer

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

(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?