Cells, batteries, generators and motors — Paper 1 · IGCSE Science - Combined 0653

39 A transformer is to be used to produce a 6 V output from a 24 V input. coil X coil Y 24 V 6 V What are suitable numbers of turns for coil X and for coil Y? number of turns number of turns on coil X on coil Y A 240 60 B 240 240 C 240 960 D 960 60

1 marks

Answer: A

This question in 0653/11 May/June 2006

39 The graph shows the voltage input to a step-down transformer. 12 V voltage input 0 time Which diagram shows the voltage output from the transformer? A B 12 V 12 V voltage voltage output output 0 0 time time C D 12 V 12 V voltage voltage output output 0 0 time time

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2006

39 The diagram shows a lamp connected to a transformer. 40 turns 200 turns 12 V a.c. What is the potential difference across the lamp? A 2.4 V B 12 V C 60 V D 240 V

1 marks

Answer: C

This question in 0653/11 May/June 2007

39 How is electricity transmitted over large distances and why is it transmitted in this way? how why A at high voltage for safety B at high voltage to reduce energy loss C at low voltage for safety D at low voltage to reduce energy loss

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2007

39 The diagram shows a transformer connected to a 240 V a.c. supply. soft iron core primary coil secondary coil 60 turns 30 turns 240 V a.c. What is the potential difference across the secondary coil of the transformer? A 30 V B 120 V C 240 V D 480 V

1 marks

Answer: B

This question in 0653/11 May/June 2008

40 A transformer has 50 turns on its primary coil and 100 turns on its secondary coil. An alternating voltage of 25.0 V is connected across the primary coil. 25.0 V primary coil secondary coil 50 turns 100 turns What is the voltage across the secondary coil? A 12.5 V B 50.0 V C 175 V D 200 V

1 marks

Answer: B

This question in 0653/11 May/June 2009

35 A transformer has 2400 turns on its primary coil and 200 turns on its secondary coil. primary coil 2400 turns secondary coil 200 turns output voltage = 240 V Assuming the transformer is 100 % efficient, what input voltage is needed to give an output voltage of 240 V? A 12 V B 20 V C 240 V D 2880 V

1 marks

Answer: D

This question in 0653/11 May/June 2010

31 A tidal power station is made by building a barrage. At high tide the sea water is trapped behind the barrage. barrage turbine trapped sea water sea at low tide At low tide the water is allowed to flow back into the sea through a turbine. What is the useful energy change in a tidal power station? A electrical energy → kinetic energy B electrical energy → potential energy C kinetic energy → potential energy D potential energy → electrical energy

1 marks

Answer: D

This question in 0653/12 May/June 2010

34 A transformer has 2400 turns on its primary coil and 200 turns on its secondary coil. primary coil 2400 turns secondary coil 200 turns output voltage = 240 V Assuming the transformer is 100 % efficient, what input voltage is needed to give an output voltage of 240 V? A 12 V B 20 V C 240 V D 2880 V

1 marks

Answer: D

This question in 0653/12 May/June 2010

34 A transformer has 2400 turns on its primary coil and 200 turns on its secondary coil. primary coil 2400 turns secondary coil 200 turns output voltage = 240 V Assuming the transformer is 100 % efficient, what input voltage is needed to give an output voltage of 240 V? A 12 V B 20 V C 240 V D 2880 V

1 marks

Answer: D

This question in 0653/13 May/June 2010

32 Which transformer would change a 240 V a.c. input into a 15 V a.c. output? A B 800 turns 40 turns 1000 turns 25 turns C D 1200 turns 75 turns 2400 turns 15 turns

1 marks

Answer: C

This question in 0653/11 May/June 2011

34 Which transformer would change a 240 V a.c. input into a 15 V a.c. output? A B 800 turns 40 turns 1000 turns 25 turns C D 1200 turns 75 turns 2400 turns 15 turns

1 marks

Answer: C

This question in 0653/12 May/June 2011

35 Which row shows two of the essential items used in the construction of a transformer? iron core permanent primary coil | — slip rings magnet A v v B v v Cc v v D v v

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2011

36 Which row shows two of the essential items used in the construction of a transformer? iron core permanent primary coil | — slip rings magnet A v v B v v Cc v v D v v

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2011

36 Which row shows two of the essential items used in the construction of a transformer? iron core permanent primary coil | slip rings magnet A v v B v v Cc v v D v v

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2011

30 An electric circuit contains a battery and an electric motor. M electric motor Which energy transfer takes place in the battery and which takes place in the electric motor? battery electric motor A chemical to electrical electrical to kinetic B chemical to electrical kinetic to electrical C electrical to chemical electrical to kinetic D electrical to chemical kinetic to electrical

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2013

30 Which energy resource can be used to obtain electricity without any moving parts? A hydroelectric B solar cells C tides D wave

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2014

32 Electricity is generated using wind. Which device is used in the process? A dam B nuclear reactor C solar panel D turbine

1 marks

Answer: D

This question in 0653/11 May/June 2020